toolbox not working

Toolbox works for a little while then stops working until restart. Then asks me to reactivate.

 

Hello David, please DM us the Parallels Toolbox license or the email address with which you have purchased Parallels Desktop so that we can check this further. Thanks.

 

Parallels toolbox stops working after a short while then I have to restart it each time. Then it asks me to activate again. Already reinstalled the latest version. No change.

 

Hello David, we have sent a personal message please reply to us with the Parallels Toolbox license or the email address with which you have purchased Parallels Desktop so that we can check this further. Thanks.

 

Don't know what you mean by personal message. Where?