Try the username as Admin with a password of 1111. Note the uppercase A in Admin.
There is no Text but you can use the chat feature on the Support page. Click the Red Chat icon on the right of the screen or scroll down and click "Chat with Support". You will need a maintenance agreement to use chat and must use it during its business hours for your country.
If that didn't work, you may need to call Support for a password reset: 1-800-821-2797
I have found the serial number and tried with username: admin and password: serial number, but unfortuantrly this credentials doesn't work.