Hey, I solve a problem wich occurs on Paper servers.
To explain, when you die, the plugin kills you over and over, and the solution to solve this issue is to disconnect and reconnect onto your server.

The issue is now solved and the plugin works fine in Paper 1.15, if you find other issues, don't hesitate to come and talk on our discord : https://discord.gg/DkQSQa7
Or you can report it on Github.