Sorry to hear that! Completely forgot about this, but Apple's policies require developers to sign and notarize their apps before they'll run on OSX, and I can't justify the fee
According to Apple's website it looks like it may be possible to run it using the following steps:
- In the Finder
on your Mac, locate the app you want to open.
Don’t use Launchpad to do this. Launchpad doesn’t allow you to access the shortcut menu.
Control-click the app icon, then choose Open from the shortcut menu.
- Click Open.
The app is saved as an exception to your security settings, and you can open it in the future by double-clicking it just as you can any registered app.
Totally understand if you'd prefer not to run an unsigned app - no pressure!