It seems there are few who want to start on this and I might see an explanation for why that might be true.
Starting with the first sentence of your first post? What is the "Volta" you are asking about? Are you meaning the Travato RV you list?
Since I did not understand what RV or part you are talking about, I skipped over the question. Most of us will not have seen a 2022 model RV and will not have any idea of where things are located or even if you have the same things other RV have, so a first step has to be to tell us what you are speaking about in a way we can understand.
What does this mean?
I think the volta power switch replaced the battery switch by the fire extinguisher.
You see the problem is that most of us have no idea where the fire extinguisher is, so this is no help on letting anybody help you. I have no idea what a volta power switch might do, so it leaves most of us totally cold on trying to help. What is a volta power switch?
But if I were starting on finding a problem with charging when plugged in, I would first check to see that the AC power is getting into the RV by checking the voltage at the load center main breaker!
2015 Winnebago Vista 31KE on 2014 chassis