1st: Stardock allows me to log on automatically - Normal
***: At all other points - it gives message - user and password don't match ?
If you're having an account issue, then you should contact
[email protected] can sort that out.
Serials you get in the email may not match the ones you've used previously--this is normal, and they *should* be treated as the same in the system.
From some of the in-game issues you describe it sounds like you might not actually be up to date on patches after all, though some of them seem to just be confusion or new issues. In any case, one thing at a time--lets get you fixed up on SDC and make sure you're up to date, then we can address those things if they're still there.