reWASD not opening after install

[reWASDer]

I removed every record of "rewasd" and "disc-soft" from the computer, including drivers and registry entries.

Got it. But you have tried to Clear data when reWASD was installed and it didn't help, right?
I am just asking to get more info in order to reproduce the issue from our side and fix it in upcoming updates.

By the way, today we have released the new version (5.8.1) and it would be cool if you give it one more try. Your refund request is being processed, it may take a day.