I recieved a large amount of credits (millions) after a multiplayer
match. After checking it out it seems other people have had the same
thing, It's probably from when the host has modified their game files.
Any way, I made the mistake of spending said credits just to see what sort of stuff you get out of spectre boxes. I bought a lot, like, loads.
Anyway tried to play the game again today, 'this account is invalid'. Contacted EA support it turns out my account is banned because of 'suspected credit hacking'.
Now, I wouldn't mind if I can't play the multiplayer anymore, it's my own stupid fault for spending said credits.
However
this also means I can't access any of my single player DLC, I had
already recruited the DLC character, I was wearing DLC weapons. It's effectively screwed up my game.
It's so frustrating, I barely even play multiplayer games, to me mass effect is a single player series, I was only playing multiplayer to get galactic readiness to 100% so that I could feel my single player game was 'perfect'.
Anyway, consider yourselves warned.