I've been searching here https://www.phpbb.com/customise/db/extensions-36 for a while but haven't found anything yet, hence my question:
Can the admin/s ask if it is possible to program a new extension, which in the "QuickLinks" also a display of the forums subscribed by the users is possible.
This would then be similar to Duolingo, where you get a stream of your subscribed forums.