It doesn't look like it's possible in the app. You'd have to log in on a browser, go to your profile settings, and go to the "blocked" tab.
For what it's worth... I think the mobile browser experience is currently superior to Jerboa anyway. The scrolling is smoother and if you open posts in a new tab, you can just close the tab when you're done and you don't wind up back at the top of the feed. I have high hopes for the app but man does it drive me nuts when I try to use it.
pretty much everyone from lemmygrad and hexbear dismiss anything from any western outlet as propaganda while uncritically spouting insanity from the putin regime or the ccp.
i saw someone unironically posting about "democratic dictatorship" yesterday. good times