On plex app in file view section, the wrong movie is playing

Server Version#:4.63.0
Player Version#:
runs on windows 10 pro
hi everyone
I’m having accessing my movies on my android app away from home.
when I go in “my movie” I can’t see all of them BUT if I organise by file, they are all here.
The problem is: for most of them when I open a file it is the same movie showing.
for example: terminator 3 will show in the file: the mask and many others files.
which makes more than half of my playlist unreadable as it shows terminator 3.
I deleted terminator 3 couple of days ago from my hardrive, thinking the file was glitchy, but it still shows up when I open random files of different names, difference is this time I can’t play it.
It was working fine for many months but not anymore
I wonder if an update messed up the settings or if there is a conflict with size of the movies (which shouldn’t) as most of the movies i can’t see are around 20gb, but terminator 3 was around that size too.
thanks for your help

note: just tried to to play terminator 3 now that i deleted it… it plays another random movie that has a completely different name.
played from plex app installed on the pc that has the plex server installed on it and the movie stored in it…