I opened the app without thinking right now, and to my surprise it's working.
I mod an empty subreddit, which made it work before. It didn't load yesterday, and tonight it does without any changes on my side.
I was almost happy to get rid of reddit, but it's seems it is not for today.
If you are a mod you won't get the 429 error
Community of the Android app Boost for Lemmy
If you are a mod you won't get the 429 error