Hard Drive Died -- Please Help

My primary drive died yesterday, forcing me to rebuild and reinstall everything. Luckily, most of my Davinci Resolve-related files are stored on other drives.
However...
I'm not a Blackmagic Cloud subscriber. I bought the product before all of that started and upgraded as needed. Now, I'm lost. I can't find the card with my original product key.
What do I do to activate again?
I've emailed support. No response yet.
I thought there was a place for customers to log-in aside from the cloud log-in, but I guess that went away at some point.
However...
I'm not a Blackmagic Cloud subscriber. I bought the product before all of that started and upgraded as needed. Now, I'm lost. I can't find the card with my original product key.
What do I do to activate again?
I've emailed support. No response yet.
I thought there was a place for customers to log-in aside from the cloud log-in, but I guess that went away at some point.