@dansup quick question: I tweaked my firewall somewhat yesterday to block Netflix, Meta, Google and Amazon domains.
Looks like it impacted Pixelfed, too: upon opening the app (IOS) it wont‘t find posts. When disabling the firewall, it will work again.
I suspect it‘s due to one of the Google domains (or Amazon/AWS?) - as these are many: could you tell which IP-Domains are needed? Or may it depend on the instance (pixelfed.de)?

@poldemo Yeah it depends on the instance, I'm not sure who pixelfed.de uses as a hosting provider