The service should register itself to the user DID doc. This is quite obvious but I didn't realized at first time and struggled for a while. There is no registration step for AppView. AV is just a client and registration is done to decentralized services, stored in user DID doc.

0

If you have a fediverse account, you can quote this note from your own instance. Search https://bsky.brid.gy/convert/ap/at://did:plc:xasnlahkri4ewmbuzly2rlc5/app.bsky.feed.post/3m6st4ow7us2d on your instance and quote it. (Note that quoting is not supported in Mastodon.)