> Thanks for the clarifications. [...] no PB support

Maybe my English skills are lacking but I read geit's statement as more like saying the opposite.

> What happened to native Arexxx

For existing ARexx scripts this might become a solution:

https://morph.zone/modules/newbb_plus/viewtopic.php?topic_id=7711&forum=12

For new scripts on the other hand the solution could be this:

https://morph.zone/modules/news/article.php?storyid=1870

> payprus

This might play a role:

https://morph.zone/modules/newbb_plus/viewtopic.php?forum=32&topic_id=7039&start=37