Bridgy fails to connect to GoToSocial

[zilti]

I tried to find out why Bridgy has stopped working for me a while back. Looks like Bridgy is absolutely convinced my server does not exist: https://fed.brid.gy/ap/@zilti@gts.lyrion.ch

Couldn't update profile for [@zilti@gts.lyrion.ch](https://gts.lyrion.ch/@zilti):

HTTPSConnectionPool(host='2001:1600:18:100::2e1', port=443): Max retries exceeded with url: /users/zilti (Caused by NewConnectionError("HTTPSConnection(host='2001:1600:18:100::2e1', port=443): Failed to establish a new connection: [Errno 111] Connection refused"))

[snarfed]

Hey, sorry for the trouble! You found the right part of the logs, looks pretty clear, we can't connect to your instance. Is your server maybe blocking Google Cloud somehow? https://docs.cloud.google.com/compute/docs/faq#find_ip_range

[zilti]

I definitely am not blocking Google Cloud; I doublechecked everything on my server, and I also haven't changed any config since the last time bridgy actually did work with my instance, so I have no idea what the issue could be.