Fade in fade out or licence missing

Cubase 12 pro Fade in and fade out not working. Licence missing for reverence.
Earlier Download nuendo trail version for testing, but mu purchased vesrsion of cubase 12 pro is not working properly. Dont know what to do please help me.

Hi and welcome to the forum,

Could you be more specific, please?

Maybe there are some impulses installed with Nuendo. Double-check the Steinberg Library Manager and remove all content, which is not part of Cubase 12, please.