iPad not fast charging or transmitting data

Hello,

I recently discovered my iPad is not fast charging nor is the data working through the USB c. It’s an iPad 10th Gen that I purchased new. It charges at 5 volts 2.8 amps max. I tried multiple cables and fast chargers to no avail. I also tried connecting it to a computer as well as an hdmi dongle and there was no data. I have a bit of experience troubleshooting and repairing electronics so I took a shot at it. I thought it was the usb c connector so I replaced it with a new one. At one point with the new usb c connector I got fast charging shortly after install ( 9 volts at 2 amps) but when I unplugged it to try the hdmi it would not work anymore. I did a bit of troubleshooting by removing the emi shield over the charging circuitry and probing with my multimeter but without the schematics I wasn’t able to come up with much. Any ideas of what could be my issue? Seems like people the overvoltage protection diode is a common issue but if that was my issue would it allow for a one time fast charging after port replacement? Also, one last detail is I recently starting using one of those magnetic adapter chargers where one end goes into the iPad and the other stays attached to the charger. My only thought is that when it was unplugged from the charger the pins on the iPad side of the adapter are exposed to the environment and may cause a short?