Migration of prod-key

I have upgraded to windows 10, 3 months ago (sadly) from Windows 7.  Each update or even rollback for windows 10 knocks out 75% of my utilities, Avira Pro & Prime and Opera included. Advise what the problem could be and how to fix it. I am going bankrupt purchasing new products across the board because of this. Have even tried switching email for notification ...... still requests product key