Login to your server with the user that you installed amp on then open CMD and run this command: ampinstmgr switch instancename Development replacing instancename with the actual name of the instance in AMP. then we are going to update your instance with ampinstmgr upgrade instancename
This is to put you into the dev branch as there is a fix for it right now. If you have any more problems, please reply back to here or join the discord. We know that there are more bugs with Minecraft Bedrock and are working on trying to track them down. Amp Logs would be useful