tymviosbsm thank you for the clarification. Indeed it does not allow to Publish events for this plugin HOWEVER, it does not allow to do so even when AAM plugin is not active.
Looks like the Modern Tribe did some funky changes to their plugin that causes this issue. The solution to this problem is to create a custom capability
publish_tribe_events that is declared in this plugin and all should work as expected.
Keep me updated.