First, it's the license key that has the value, not the download.
Second this is your own documentation:
We proceeded in good faith based on your published documentation.
"version 3 is no longer supported, and this includes upgrades"
Did we miss this in the documentation before we spent $250? And when we ran the requirements checker that only indicated that we needed to update our PHP version?
No ready access via SSH. Reloading the page throws this error:
Error: count(): Argument #1 ($value) must be of type Countable|array, null given File: /system/Convert/Convert.php Line: 552
Does that suggest anything?