Collections are defined by users. So I recognize that the number of puzzles in a collection could change over time.
I was exploring the collection titled with 5 question marks (apparently the forum will not allow me to type 5 question marks here) by user “???”
On my home page, Eterna , the collections shows as 29 puzzles with a progress bar indicating that I have not completed it.
When I go to the collection, Eterna , the collection shows as 27 puzzles, all of which I have cleard.
I assume the owner of the collection reduced the number of puzzles from 29 to 27. My home page should update to match that change (and then give me the completed message, not the in-progress bar.
thanks