Can’t connect to Minecraft instance after update

OS Name/Version: Windows/11

Product Name/Version:AMP Phobos v2.6.4.2

Problem Description: After an update every that tries to connect to a Minecraft instance keeps getting the message “You’re not invited to play on this server”. I started a new Minecraft instance and they are able to connect and play, it’s just the original instance that they can’t. They have all updated their software/apps.


Steps to reproduce:
  • Step 1 Restarted all equipment, and software.
  • Step 2 Update all equipment/hardware and software/apps.
  • Step 3 Searched Google, YouTube, Reddit, and this forum but cannot find a solution.

Actions taken to resolve so far: tried all steps above.