YouTubeStudio is quite frustrating. You can do some basic stuff, but for most really useful things, it asks you to go to the desktop version, which doesn’t load on iPhones anymore for some random reason.
You can’t search for comments, block users, ask for your video monetization to be reviewed. I used to solve this by going to safari, loading the desktop version of studio and doing that from there, but that’s no longer possible.
Also, it doesn’t allow you to choose the notifications you get. I like getting all of them, including answers to my comments, like you can do on the desktop version, but the notifications you get here are super random. I wrote like a month ago to ask about these things, but of course they’re too busy to give a crap.