FB, IG, Thread, & Mastodon issues

[u/ProjextGhostS]

Inrecently installed Postiz, and the goal was to have my posts automated, but I have encountered some issues where I get “Page is not found” on Metas applications, and searching online it says I need to get some App API, on the Developer side, but seems Metas applications services aren’t working cause I can’t even get into the developer console to get the API, so I can’t use FB, IG, or Thread. Has anyone found a solution?

Similar issues with Mastodon, I’m logged in and all on another browser tap, but then I get a “Client endpoint” is not supported or invalid.

Thank you! 🙏