Some similar screwy stuff happened to me in the last few hours. I had 18 Palladium in my cargo. Even when I was buying it, the purchase didn't work. I restarted the game, got it to work. So, I flew back to sell it, landed my ship but got a disconnect just after that. Logged back in and I was 17km from the station. I landed again. But, my cargo was empty! I filed a support ticket. That's a lot of credits from me to lose. Panic, ah!
I saw this topic, so I signed back on and the 18 Palladium was back in my cargo. I used 4 to complete a mission, then sold the 14 left. I now have a lot of credits. Actually, I seem to have more than I should. I'm not sure why. I signed off then back on again. I still have the credits but also still have the 18 Palladium.
Something is messed up. I updated the ticket to let them know. I assume they are getting lots of tickets. Hopefully, it will all get sorted.
I guess I shouldn't keep playing tonight given the trouble. But, I'm so addicted to this game.