Hi David,
sorry, we will no longer distribute GarageBuy outside the AppStore. Didn’t know TestFlight is only available since macOS 12. So maybe you can upgrade? Or you have to wait for the final release.
If you send me your Cloud ID I can try to reproduce this with your account. But with this ID I will be able to see all your searches and all your favorites. So this is kind of confidential. If you decide to give me the access, you can copy the Cloud ID from the advanced About GarageBuy panel. Just hold down the option/alt key and select GarageBuy → About GarageBuy in the main menu.
Do not post the Cloud ID here. Send me a direct message/email.
Thanks,
Paul