Add a new android phone in my avast account when avast pro is already active

Avast Account (my.avast.com)
1

Recently I bought a new Android phone and I want to remove my former one, I succeed! But adding the my new one on where avast mobile pro is already active. It gives a great problem . It is such a simplified procedure that I couldn’t manage?!
I felt myself a dummie here can someone help me out? Thnx.

2

Account FAQ: https://support.avast.com/article/210/

3

Thanks a lot for this solution!

4

You’re welcome.