Who know, politics is not my strength, just blocking oversea SMS TAC is enought stupid liao, now a lot of oversea account failed to 2FA login, because of this blocking...
Blocking people with knowledge always the bad choice, it is always better to modify the default to protect the most, while open for professional to do what's their need.

Unless you wanna becoming China, most port getting blocked, just to "Protect" stupid customer from all those vulnerable, like opening SMB port over Internet instead of Intranet, while using old Windows with Update disabled etc.

And yes, funny case, Tunetalk disallow me, SMS to China's phone number, lol.
(So yes, my case with not receiving SMS TAC, might be the TuneTalk doing it by blindly follow MCMC.)
Like the debit/credit card, it is disabled for unsecure oversea payment without using 3D Secure(TAC via app/sms), while open for customer to enable it for oversea payment(Steam/Google etc) when they need it.

This is why your guys reporting lagging over website, but speedtest nothing.
ISP just hate UDP.

Or you can switch to other provider like Maxis Fibre

Just add on RM10/mth for public IP

if you are got maxis infrastructure then they can promised restoring 24hours
if you take maxis fibre with tm infrastructure maxis can't promised restoring 24hours due TM infrastructure need take few days then fixing

tm unifi = tm infrastructure will restoring speedy fixing
maxis fibre = maxis infrastructure will restoring speedy fixing
maxis fibre = tm infrastructure will restoring slower fixing few days only like 48hours or 72hours

If you have no issue with TM, you won’t have issue with Maxis too. I’m using both TM and Maxis, no problem at all. Three years with Maxis and still counting, not once Maxis is called to fix anything.

Let me offer you another perspective.
Fiber cut upstream of the optical splitter will affect the whole area.
It's not possible the whole affected area has no Unifi user.
So in a way you will still get 24 hours repair.

Let's be honest, 99.7% uptime guarantee is very damn good for a home account. Just use mobile data in the meantime.

So this whole non-TM telco on TM infra == unreliable story is overblown in my opinion. Sometimes I feel it's made up just to discourage people from using other telco.

Everyone has preference. No issue about it. I WFH all the time too since 2020 and Internet is important to me. I live in two locations, one equipped with UniFi and another one with Maxis. I don’t have issues with both. People who mislead others should really think, what did they gain from this? Not like TM gives you any shares.

There are quite a few workaround if IPv4 is absolute must for you.
1. Use cloudflare tunnel
2. Sign up for a VPN that offers IPv4 complete with port forwarding. You get VPN to every region on earth + IPv4 with this method.
3. Use an OTT / Network as a Service that lease you anything via a tunnel. They are basically different kind of tunnel broker, some even offer BGP over GRE. If telco screw you with IP transit, this method will tell them to fly kite. There are companies that even offer IX peering over GRE. Yes, even to Equinix, worldwide!
4. Use a VPS and set it to forward IPv4 traffic. You get compute, storage, IPv4 with this method.

I don't see ISP offering IPv4 as an advantage today. Why pay RM10/month just for a number when you have better option?