Exhausted Test Version (ChannelStrip AU) blocks start of Apple iMovie

Error Message:
Applikation ‘Sweet Spot Morphing Channel Strip AU’ hat den folgenden Fehler verursacht:
Die eLicenser enthalten keine gültige Lizenz.

Options: retry (no cange)
cancel (abbrechen) will just bring up the same message again.

I want to use my Imovie without the Steinberg Channel Strip
It must be possible to decide so after a “Test period” ?

Any idea / help to get out of this ?

I already deleted / reinstalled iMovie. - no change for better