Hi i noticed firmware issue in rooter ASUS BRT-AC828 is was already one replaced and now i have the same issue.
I use Dual WAN and Fail Over.
Each few days rooter stops to refresh IP address from ISP provider.
According to provider they se device connected but no MAC is send from device.
So they cannot refresh IP address.
Rooter reporting this as an error than DNS of network provider do not working right.

Rooter then switch to secondary WAN and everything works fine.

After Power off rooter for few seconds turning it on i have my WAN 1 connection back and network provider confirms that then he recieve MAC also.

i have firmware: 3.0.0.4.382_70348

in past i was using ASUS AC68U without any problems.

ISM already have MAC address of device... if i clone mac i will get my PC mac instead of rooter mac this will not work.
Or maybe i should put there rooter mac ? ... but this seems not to have sense.

ISP already have MAC address of device... if i clone mac i will get my PC mac instead of rooter mac this will not work.
Or maybe i should put there rooter mac ? ... but this seems not to have sense.

RT-AX88U and 3.0.0.4.386_41249 ther is big issue with samsung phones s20... i have transition speed nearly 0Mbs over AX nettwork.. all other devices work fine with AX.
Any ideas ?

Hi i found solution... during setup process i have selected option: WAN - Internet Connection > Special Requirement from ISP > Spoof LAN TTL value
When it is set to ON .. all Samsung devices WIFi is corrupted ... 2.4G and 5G
when it is set to OFF all running fine.

there is big issue with latest AX88U firmware 3.0.0.4.386.42095
It is corrupting VPN config... if you have more than 1 user it will delete them..do off and on in vpn... it will not allow to add more than 1 user. i was forced to revert back to 3.0.0.4.386.41700

Ok i have tested users are not deleted... but i cannot connect:/

Tue Mar 23 16:56:20 2021 VERIFY ERROR: depth=1, error=self signed certificate in certificate chain: C=TW, ST=TW, L=Taipei, O=ASUS, CN=RT-AX88U, emailAddress=me@myhost.mydomain, serial=537761679212863741231573348646157012654918945446
Tue Mar 23 16:56:20 2021 OpenSSL: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed
Tue Mar 23 16:56:20 2021 TLS_ERROR: BIO read tls_read_plaintext error
Tue Mar 23 16:56:20 2021 TLS Error: TLS object -> incoming plaintext read error
Tue Mar 23 16:56:20 2021 TLS Error: TLS handshake failed

Ok i have solved this. Unfortunately after firmware change some certificates are chenged.
So i made new export... now it is working..
Interesting is that when i enter certificates manually from old configuration i TLS box ... it seems not to work.
Now 10 people working remotely no problems now.
This beta have limited functionality in guest network. Not all options are available like it was in official one.

May I ask, have you factory reset the router after the beta firmware update? YES

If yes, do you use setting file upload to upload the previous setting? I have uploaded backup from version: 3.0.0.4.386.41700

I was also try to put by hand VPN certificates but was not success.