I know this post is old and this was not your problem (because I can read the magic word that was causing my problems in your code) but I got here looking for this solution so I think this could be useful to other users.
I’ve created a lot of classes without problems, but this time I forgot to add 'blueprintable" between the class parenthesis. If you make variables BlueprintReadWrite but you forget to add this word you get no errors from compiling but nothing will show up…
I wish this answer was here when I needed it, I also downloaded e previous version of unreal thinking it was a bug in 4.26.2 (Because until last week it was working fine with 4.26.1), I think I will never forget how I wasted these 3 hours…