Hi
@uociucamin,
As I can see from the information you've provided, seems to be working normal.
As per the indicator in the lock screen - and the battery icon, does not indicate specifically that it is charging 30W, only that it is connected to a hypercharge capable charger. The "Steady" setting on Steady Charging is 18W approx.
Ultra Steady is 10W, as such, your battery going from ~7->90 at 1hr, seems quite normal meaning so far, we can see, it is working exactly as normal.
There is no indication that your device has any problems, nevertheless if you are worried about any losing data, you should perform a data backup.
Regarding any refunds you'll have to contact your reseller for that.