Plex media server reinstall - Files don't play anymore

Server Version#: 1.43.2.10687
Player Version#: 1.112.0.359-0d79a49f
CPU: Ryzen 5 9600X
GPU: RTX5060Ti 16GB

Here is a log of when I tried to play S1E1 of Blacklist, I hope I did this right.
Log: https://pastebin.com/nLi52qha

I am new to Plex and all of this so please be patient with me :)) Thank you <3

To give you some context to what I ma experiencing. I installed plex media server before version 1.43.2.10687 and initially I did not have plex pass. After I setup my libraries all worked, every video and type of video and then I bought plex pass which I still have. Even then everything worked I selected the 5060Ti for transcoding.
After some updates, idk if it was after plex update or windows update or NVIDIA drivers, I started getting weird network issues, I messed around with settings nothing worked and I decided to reset my entire plex setup.

I have uninstalled plex, removed using a tutorial, where I remove everything from Local and from registry. Then I reinstalled it, I remade my libraries and now not all files work. Even tho I selected 5060Ti as the transcoding. I get either Error code: 4294967283 or on my iPhone something so long I can’t even copy.
I thought it might be because of the video files that had PSG but I removed the PSG and still did not work. Then I noticed that .mkv files don’t seem to work only .mp4 do.

Honestly I am very confused and have no clue what to do. It was all working before beside of the network error and now nothin :expressionless:

Any help or guidance is much appreciated :))
Edit: I don’t mind reinstalling the whole server again if I messed up something. xD