> Weren't the sources bought already and a continuous effort for native NG versions being made?

Yes, and there have even been released preliminary MorphOS-native builds months ago already:

https://morph.zone/modules/newbb_plus/viewtopic.php?forum=3&topic_id=9167&start=36

This runs surprisingly well for what it is.

> Wasn't Magellan included in Amikit already fully registered?

Yes, absolutely.