If you are receiving a "Failed Login Attempts" message, you most likely need to reset your password: https://www.topazlabs.com/my-account/lost-password/
If you are still having issues, please email help@topazlabs.com directly.
Are you logging in to the right place?
With Topaz Labs you may have up to two login accounts.
For Topaz Labs plugins you will login to www.topazlabs.com
For Topaz Studio products you will login to web.topazlabs.com