I just did the $99 upgrade. I have a fender account and can log in and have just downloaded 8.1. My computer is: 9950x, 64 GB DDR5, boot is PCIE SSD 4 TB, 1.8 TB clear, windows 11. 8.1 installs with no issue. Once I input my verification code from the Fender site, I get this popup, when I enter my information (I copy the serial number from the Fender site (have also copied the PW to make sure its correct). When I put in the correct information it says problem with password/email. Anyone knows how to fix this (I've put in a help request).