Unable to use after changing my Mac acount name

hey everyone,

I met a problem when I change my mac's account name, every time when I open BTT, a privacy policy window jump out and ask for permission to record the screen.

If I click 'yes', suddenly my Mac will log out, I have to relogin. And no matter how many times I tried, it is always the same thing happened.
In fact, I have already give BTT the permission for screen recording.

I think maybe it is due to the BTT license is for my old Mac account name? is there a way to solve a problem like me? I really need BTT for my normal life >_<

Hope someone could help me