Ok, well it's kind of hard to understand this.... If you can be a bit more descriptive that'll help.
But I'll still manage. If it was working fine before you exported the map then that may be the problem. I usually just avoid map making entirely since it usually messes up my game... o.o' Luckily you got over the crashing problem.
But by invalid does it actually say "Invalid" when you put in username or password? Be a bit more descriptive on that part, please... But honestly it might be because of the map. If it started working badly after you uploaded the map the best thing to do is delete EVERY Feral Heart file. ALL OF IT, maps, MM, item pack, whatever you have and redownload. Or you can try finding the map file and deleting what ever you exported, but if you can't just delete it all.
