Is Error Code 564 a server-side issue, and if so, what can I do?

Sometimes, Error Code 564 is caused by problems on Roblox's servers. In this case, there's not much you can do directly except wait for Roblox to resolve the issue. You can check the Roblox Status page (status.roblox.com) to see if there are any known outages or maintenance periods. Following Roblox's official Twitter account (@Roblox) can also provide updates.