Rhino.Inside Button is Greyed out

Hello there

I am using Rhino 7 and Revit 2019 and I have just installed Rhino.Inside and then restarted both applications.

However the Rhino Button was greyed out in Revit and there were also no Revit Tabs in the GH spae either.

Would anyone please help here?
Here are the screen caps for both environments,
Thank you so much

check this.

Thank you so much its working now!

all the best!