HDCP 2.x-compliant

The new box is HDCP 2.x compliance. So if connect to old TV which is normally non compliance just because the standard has not been established yet, then you will have problem. Read here

https://www.howtogeek.com/208917/htg-explai...-how-to-fix-it/

Is it Sharp branded TV? What is the model number of your old TV?

If 720p tv for sure not compliant

But IIRC the box itself would only be in HDCP 2.2 mode if you set it to 4K. It will fall back to HDCP 1.X if you set it to 1080p. So a normal 1080p TV should be able to work with the box.
The people who have issues are the ones that has 4K TV's but HDCP lower than 2.2, which means they can't use the 4K capabilities of the box. If you are just using it for 1080p, then it should be fine

Besides Astro box, what other HDMI devices you would connect to that TV?
Unifi TV box? Gaming consoles? Blu-ray player?

If worse comes to worse, use HDMI splitter to bypass the HDCP, then it'll solve the problem.

If possible, try connect your Unifi TV box via HDMI port to your Panasonic TV.
If you're able to view the live TV channels without seeing any HDCP errors there, then using Astro box shouldn't be a problem.

If just to connect o ultra box via HDMI, then any of the newer TV will do regardless of brand or platform
Oh... but do stay away from SHARP, some installer  remind me that it may also have some issue.

If you plan to use multiroom app, then you may also want to check out from astro page on supported model. With Multiroom app, then you don't need the ultra box.

Time to shop for a new 4K TV.
As long it is current model ones, then it should be good to go.

Your current astro decoder must be clogged with dust and the fan needs to be on high mode to dissipate the heat.
Don't change the decoder if there is no issue and you don't need to invest money to buy TV.
Moreover, you are not watching 4k content/channels.

what's the satellite signal strength? 

Does your parents or yourself, do a lot of recordings on your Astro PVR box? Do note that you'll lose all recordings made on your PVR box as you change to new box.
Misalignment on the satellite dish or LNB could be the reason why the signal strength readings is at medium. In ideal scenario, Strength readings can go as high as 80-90%.

Which Astro pack you're currently on now? If not sure, check Astro bill, page number 3. Or you can check it at https://myastro.astro.com.my

Haha... oklah for parent sake, just upgrade for them lo. But how come you are not the account owner but you are task to do the research... Haha... ask the owner lo...
Your parents current using 43 inch? Else the reduction in size will be very apparent and It is a bit small to view 4k content though. A 65' range from RM2.5k to 3.2k
Aiya, since they already request to upgrade, no need do all this la... waste time only. 

If you are on Premium Pack 2, then you can't be using PVR box because Ultra Box is mandatory for Premium Pack 2 since day one.
I believe you've seen the screenshot wrongly. Check that screenshot again...

Can you confirm that you are connected to HDMI cable from your Astro box to your Panasonic 32 inch HDTV? Able to view HD channels without any error message?
Or you are using AV cable (red, white, yellow)?

Interruption during rain is normal. Depends on how heavy the rain is. If you think before this you can still watch the program with that same amount of rain before but not now, then there must be some leakage at connection point outdoor.

I once get mine reconditioned the connection and the signal strength improved and it is now more resilient to rain. Well, that was quite long time ago 

Thought the switch to ultrabox is foc now.
If the ultrabox is mainly used by your parents and they are not using the VOD and streaming feature, just don't connect ultrabox to internet can help on the pop up message.

And now signal is about 65 to 70
Now if you go to Settings>Satellite Settings>Diagnostics, what is the CNR reading? How many dB?

But after yesterday rain, it keep use internet play, even signal is back, it does not auto switch?

When the Ultra/Ulti Box is under Satellite mode + connected to the Internet + no satellite signal = you will see this message (shown above) when tune to any channels except 4K UHD and radio channels.
As you press OK to 'Switch Now', from that moment onwards, the box will load the TV channel via Internet streaming, until you tune to other channel, which it will switches back to Satellite reception mode.
And nope, it does not auto switch. You have to do it manually everytime you tune to a different channel when the box detects no satellite signal.

Feel annoying keep pop up continue viewing, and are tou sure what to switch channel?
My parent not understand the pop up
After few reboot finally use back satelite
The "Would you like to stay on this programme? Select No to switch to Live TV channel." pop-up message is an expected behaviour since Astro PVR box era.
It is also to remind you that you are watching an already-rewinded TV channel (not watching a Live channel) before you decides to tune to other channel.
After you select "No", then it will start to receive the TV channel via satellite reception again as it tunes to the other channel.

You don't need to reboot for it to go back to satellite TV reception.
You can explain to your parents that whenever the "Switch to Continuous Viewing" message appears, it means no satellite signal (e.g. due to bad weather).
Just press OK on remote control, then they'll be able to watch their channel as usual again (because it temporary uses Internet streaming now).
And then, when the "Would you like to stay on this programme?...." pop-up message appears when tuning to other channel, just select "No". (press Right arrow button, and then press OK). 
Advise your parents not to do channel surfing when there's no satellite signal (e.g. during heavy rain), cuz otherwise the "Switch to Continuous Viewing" message will keep re-appear again and again as they keep surfing/tuning different channels, unless you don't mind lah (but now you already complain annoying, so... 🤷‍♂️)
SCNA  is show even satelite signal still got
What are the examples of channel numbers that you're getting the SCNA message even after when you disable the WiFi?
Switch to Ultra Box for FREE is subject to which Astro package tier you are currently on.
It is not always FREE to everyone, cuz Astro will always give priority to those high-paying customers one...
The pop up message that PJng refers to, is the "Switch to Continuous Viewing" feature. It is to allow you to continue watching TV channels when there's no satellite signal, and Internet connection is required for that feature to work.

Which TV channel number that you tuned to, where the CNR reading is 14.3 to 14.5dB?

Are you getting either "Switch to Continuous Viewing" or SCNA message when tuning to these channels below: 
CH122, CH124, CH305, CH549, CH805

You might get a slightly different signal readings if the particular TV channel transmits from a different satellite transponder frequency.

But no need to headache about that... For reference sake, tune to either channel 311, 393, 707 and then get the CNR readings.

Hi guys, sorry it's me again. WTA is there any way to know if the Ulti box is currently using the satellite as main source and not wifi?
Asking bcs my house many people using many devices, I dont want another device to be taking up the wifi unless necessary ...

You can order the ulti box with satellite mode.
Once your order is created with plug n play, troublesome to change to sateliite and assthrow can say it is sop to arrange technicians (chargeable) to earn more money from you.