So earlier today, i was playing on my server with my friends when the server froze, i then left but when i tried to re-join, was sent to the lobby, i then tried the /join command, but came up with the message "Could not connect you to a default or fallback server" after trying again several times, it started up the server and sent me there, only 2 chunks were loading and all the mobs (both hostile and friendly) were glitching and spinning at quite some speed. it then kicked me from the server informing me that the connection has timed out, this happens every time i try to join and honestly im scared that all of the things i worked towards with my friends will be lost forever.
i hope you can help.
p.s i set the random tick speed to an insane ammount before it did this and i think that is what caused this to happen