Polish support replied, that they can't replace router with another model with same parameters and forwarde me to seller. What has reseller to do with warrenty/support problems of tplink? Of course...

I tryied pulling over iOS/ipadOS 14 devices - dosen't change anything (this happens also when I'm away - I can see it in the logs). I replaced also power unit with 3 different power adapters (12V +...

Have you tryied switch C9 to Access Point mode? I know that this is not a solution but I'm interested if this is problem in router mode, or global problem. As I understand you don't forward all...

Arę you kidding me? I replied to your questions about week ago: https://community.tp-link.com/en/home/forum/topic/179006?page=6 (post number 66)

To sum up: after few days support did only one thing: send firmware with beta wallpaper and nothing more. They don't even asked for logs, tryied to figure out problem, do some remote call, anything....

Update, but without success story: they asked me (again) to upgrade router to beta firmware that I already did and I send them feedback, that problem still exists. They are not even reading emails!!!