singlelogin.re still worked for me recently.

Source

We have those on I2P already, see tracker2.postman.i2p for example.

You should not torrent over the tor network, but you can torrent over the I2P network. qBittorrent even has experimental I2P support built in.

I occasionally experience the same thing. When this happens, it appears the jwt token is not sent with the initial request (thus appearing to be logged out), but it is sent with api requests on the same page (unread_count, list, etc.), so the cookie is not lost (document.cookie also shows it). Sometimes refreshing again fixes it, but I haven’t yet found a good workaround. I’ll experiment a bit next time it happens.