Collection total discrepancies

Just curious if anyone else has an issue with their total collection matching that in the actual Pokémon TCG app or if there’s a known bug or explanation that I haven’t found related to it. I’ve gone through my collection one by one numerous times to make sure that all cards are accounted for, but the total quantity of cards listed in my TCG app never matches the one on this website.

Hi, I also believe that there should be some code error somewhere that not always trigger, as there are some people that probably have the same issue.

You can see the the following posts to see some recomendations to reduce the number of mismatches and the post I made about this issue.