When I attempt to join a multiplayer server like Hypixel (which supports ever version since 1.8) it shows a message saying "Failed to log in: the authentication servers are currently down for maintenance."
I also cannot change my skin.
And no, I didn't pirate it.
Thank you for your report!
We're tracking this issue in MC-207896, so this ticket is being resolved and linked as a duplicate.
Please read the moderator note there to figure out the cause of your issue.
Its also worth noting that your report would be invalid because:
a. The game is modified (with Fabric)
b. Only the latest version (1.16.5) is accepted on the tracker
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
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