I always time out

Whenever I try to join an aternos server it says 'loading terrain' for awhile before I eventually time out. Sometimes I manage to join the server for about 20 seconds to only then get timed out. I'm able to connect to other servers just fine. How can I fix this issue?

I've been having this problem with all aternos servers. It's now letting me join but it kicks me after about 20 seconds saying I've timed out. I'm the only one having this problem, other people can connect to my server.