I don't know if this is the right place for it but it is only me who now can't get more than 480P for videos that were available before in 1080P via the Mobile App in the same conditions as before?
Example, on Laptop on the same wifi network and the same VPN server no problems.
On mobile the same video with the same configuration doesn't allow the selection of a higher bit rate.
Extra info, I already deleted the app, cleared all the settings and configurations from the phone and reinstalled, same problem.
Which platform?
I have solutions for both iOS and Android handsets (I use both daily):
iOS: I run an iOS "Shortcut" which receives the input I send it from the "Share" button on YT app, SSH's it to my Mac/Pi/whatever *nix thing I have online, tells the box to run "yt-dlp -f <format_id> -g <shortcut_input_(which is the URL)>" and sends it back to my phone via iMessage as a RAW m3u8 URL (NO ADS!) and whatever res I want (720p is "-f 22" using "yt-dlp") - I tap the URL from iMessage, and Safari plays it

On Android: simply install "Smart Tube Next" APK from github, and then when you press "Share" button on Android YT app, just share it to the "Smart Tube Next" app, which will play your video (again, AD FREE!)
(Attached): How to get the formats list for a given YT URL, using "yt-dlp" (DO NOT use "youtube-dl" - it is ancient and outdated, lacks new features. Pertinent command highlighted
in red ("-F" flag to get formats list)