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I've never played on this server before. When I try to go in it, it just says:
"You have connected with an unsupported client version, we support client versions 1.10 to 1.14. 1.15 support coming soon!"
Howdy! I'm not sure how much help I can be but you should check out this link! Click here pls! This could give you some insight into what might be the issue. Right now the server is getting ready for Revelius, so I would also check out Click here pls! for a helpful changelog into what's coming! I hope this helps somehow but if not feel free to join the discord for further questions/concerns or just ask here and someone can help!