@mdr1970 Thanx for your response.

I successfully removed the v3 HomeShield and replaced it with the v2 HomeCare.

Free care-system feels better for me. (maybe because I'm Dutch ;-)

So my conclusion is:

I did not find any problems for V2 ans V3 working together.

But when you have both, it's your own choice which one to put in main-position for using HomeShield or HomeCare.

(the M5 is situated in my backyard)