Honestly, this is the first time I am having a problem like this:
"You have entered an invalid username and/or password"
Everyone who has the same problem please write a short message here, so we can get attention as soon as possible and get it fix!
If it is a wrong message (I have seen some messages recently that server were down) then please fix the servers and fix the message.
If it the right message, please fix the problem as soon as possible and/or give us a working workaround, you can also write it in the style workaround for dummies:
1. You paypal e-mail was [email protected]
2. You registered an account SuperHero231 with the e-mail [email protected]
Now you have a problem, bla bla, you have to follow these steps to get it fixed.