Configuration problem

[Davvy80]

I'll start by saying that I'm not very familiar with Home Assitant, I started over a year ago.
I would like to understand how to insert the entities, once I downloaded the integration I followed the guideline only that I cannot insert my entities. Can anyone explain to me how to do it?
My inverter is a Foxess H1-6.0-E
Maybe the problem is me not understanding how to make it work, forgive me