I was playing for a couple hours last night, this morning I get on and attempt to change my UI colors again and after that I need to log back in. I think nothing of it but I forgot my password, whatever I reset my password. I log in, it says I dont own the game. I unlink my steam and relink it, still says I don't own the game. I verify the game files, thus getting rid of the UI changes. I still apparently don't own the game. I restart steam, nope. I try to create a new frontier account to see if I can, but it still says I don't own the game. In account information on the Frontier website, it says I don't own the game there despite relinking my account to my steam account. Help????
The game says I don't own it
- Thread starter HarperSmyle
- Start date
I apologize it fixed itself, after hours of trying to tweak
same problem here so shut steam down completely then restarted steam and game. works fine now.
"have you tried turning it off then on again" 
Log in Issues | Steam Launcher - 28/07/22
Greetings Commanders. We're seeing an elevated number of reports this late afternoon regarding issues around logging into Elite Dangerous accounts via the Steam Launcher. The team area aware and investigating. Hopefully all will be resolved shortly. o7
Modern technology... Don't you just love it!