Actually they just uploaded something to twitter 2 hours ago, as of writing this... It does seem their main focus is now Project Tower.
So:
Even though they don't do much at all with Primrose Dungeon, they are doing a lot for Project Tower. Is This one abandoned though? Still doesn't seem like it, there's actually some additional content that isn't uploaded here for this game, though it's not much. See their Twitter feed to get a glimpse through their media uploads.
On to the other game...
It's
(1) [Unreal Engine] - [Abandoned] - Project Tower [Prototype Build 20211119] [Sunbath Games] | F95zone
This one was actually marked as abandoned as you can see above...
Though according to the latest Twitter post and ones before that, it's not abandoned my assumption is that the dev is actually just spending a lot of time learning development. They've come quite a way since they started from looking at the features they've been adding/working on in their media.
The demo in the latest media is said to be available soon on Patreon.