TL;DR for people who use Liberapay to receive donations: go to https://liberapay.com/about/me/payment/ and connect at least one Stripe or PayPal account, otherwise new donations to you can't be processed.
Why is this step necessary? mastodon.xyz might not be the server where you are registered, so we need to redirect you to your home server first.
Don't have an account? You can sign up here