Can't log in to my account in league of legends

I can find my account of league of legends on trn website, but when i click “sign in” instead of searching for myself, it only updates the website and nothing happens, my riot account is properly connected, i know that because my valorant tracker works fine on the website and in the app (i use the same riot account for lol and valorant). When I click “link profile” in the app, it prompts me with “select platform” and only allows me to add platform (so it asks me basically to link my riot account, but it is already linked and works fine as i stated above) what do i do?

My nickname ingame is: DarkLightOwO (ru server)