Regarding the collectables: I haven't hear about any bugs or glitches there.

Examples from my two games: "With ZERO glitches"
I'm running two games. 
Game one: 4 out of 12 fish scales collected. Just collected fish scale 5.
Game two: 10 out of 12 fish scales collected.
Remaining collections, both games: Missing between 4-5 collectables.

I am sure it is different for every player!
I think you just need to be patient for a while longer.