charging issues

hello guys I have a original Xiaomi wireless Charger (80W) with a M11 pro. So it worked very well and fast before. I think it occured after the upgrade to HyperOS that it starts to charge in highspeed mode for the first seconds (as long as the display is on). After that, the charging went to...

I have Xiaomi mi 11 ultra, whenever I plug my charger it shows charging but the percentage is not moving above 18% and went off at 18%, when is totally down the percentage jump from 0% to 18%, Ive used follow come 67watts and 120 watts xiaomi mi charger