Final Cut Pro Trial NOT OPENING CRASHES Mojave

So I have spent the last hour trying to find a fix for an issue I have from the trial of Final Cut Pro.

Every time I open the application, the starter screen comes up then it asks me to either start the trial or buy it.

When I click OK to start the trial, it immediately closes itself self and I have to open it again, and the same problems happen.

I have tried opening the terminal for it but this still doesn't work so I was wondering if anyone can help me?

Thanks

I am also using Mojave if it helps.