Downgrade of firmware to version 1.3.0 Build 20220221 solved my problem for now.

@Kevin_Z I made two another tests: 1. I connected ISP modem directly to the computer and after restart of ISP modem, computer connects to the internet without any problem. 2. I have old TP-LINK...

@Kevin_Z ISP connection: RJ-45 Manufacturer: ARRIS (TG2492S) Situation: 1. Everything is working: ARCHER AX11000 connected, ISP is connected 2. Reset of ISP (ISP is connecting to internet) 3. ISP is...

After firmware upgrade there is no internet connection after start TP-LINK router and ISP modem. TP-LINK router is faster with starting up and it is waiting with red led for ISP modem. After ISP...