No valid license found..cubase 7.5 and others

Suddenly this error message for cubase7.5 : no valid license found. The program will quit now
On my Steinberg account all products are activated
It seem sthat all my installed Steinberg programs : Halion, Cubase, etc give the error: no valid license found

HOW TO GET CUBASE 7.5 AND ALL OTHER STEINBERG PROGRAMS RUNNING AGAIN ON MY COMPUTER ?

What to do ???

:question: Perhaps it has something to do with a demo version of groove agent …when it was expired i removed groove agent 4 ?

Remove the dongle then replace it. Open Cubase.

Ah …thanks …i forget that i cubase needs a dongle
I reinstall the dongle and cubase start up…hurray

Tip top. Have fun making your music.