Try joining through skyways.com and doing /servers. Join through 1.12.2 for the best version If your trying to join classic play in 1.8.8 and of you are getting kicked for fly try contacting a moderator to tp you
What server is this on? If it's in classic try what Monster said, or maybe apps like minechat can work, since they automatically tp you to spawn.
Best case is to join in minecraft version 1.8, and make sure you are not using any hacks. That seems to clear issues if people are not connecting to the classic server
Thank you for your thread on a recent issue. The issue has been resolved. This thread has been moved to the Help Archives.