BTT will not start up

I have paid for BTT, but it will not start. I have looked for crash info in Console, but none exist.
I have a 2012 Mac Mini, with the latest Mojave 10.14.6, the BTT 3.402 (did not start on 3.365 either)
It put up a message once, stating that it could not open and to restart manually. I push the button taking me to the app, which I restart, but no change. The message never came up again.

Possibly try this: