If you have either of those in your username or password, please check to make sure you are entering the correct character.
Also, sometimes confused characters are capital "I" (capital i) and "l" (lower case L) and the number 1 (one).
If you continue to have problems, please contact our Help Desk for assistance: www.BigSellingSupport.com I hope this helps.
All the best!
Brian Terry Founder, Reactor Publishing www.BigSellingAffiliates.com