I can’t sell my players

You can't sell them because the game does not let you list the players? Or you can't sell them because there is no demand, and there are 999+ cards for sale? You need to show us some screenshots.

They were tradable before about 4 days 

And have you activated them in team badge?

No

I have made a screen recording for the players at the marketplace 

https://www.veed.io/view/72b1c3b4-7787-465a-bb6c-d5a9cc4194ed?panel=share 
sorry the video wasn’t be able to send 

Hmm, what about your badge section? Also have you packed these two before buying them as non tradeables?

Yes about the badge section I checked it and there was nothing about them and no warning or messages about that side (the badge is not related) and none of these two players where there

Also non of them were bought from the store or the gallery or as a package 

Hmm. Where you got the then tradeables wont matter, as tradeables they initially would be showing as ready to activate (convert to untradeables) what caused them untradeable is what EA needs to get to the bottom of. . So if you didnt pack the same two cards in the gems lottery, then ea should be able to check the Badge  logs on your account if you accidentally converted them (pocket activations, obviously youll need to raise a ticket via in game menu. Kinda classes as missing content.

Good luck, let us know how you get on.