I have an Envy x360 13 with a Realtek RTL8822CE chip.
It should support all the 5ghz bands but does not see anything on channels 149+ it seems
It works fine on lower frequencies. I have tested other devices in several locations with access points from several vendors and they work fine.
The envy has all the latest windows and hp updates. Firmware is latest F22
The wifi driver version is the latest I can find (2024.10.227.2). If i recall correctly I had to get this from somewhere other than HP as HP does not provide it and I had the same problem with whatever HP is providing.
Other that that the card works ok in both 2.5 and 5 Ghz
Band C here in the UK used to be limited to licenced equipment but that changed in 2020 so a driver from 08/2022 ought to work fine. Even my 9 year old Chromebook running Chromeos Flex works fine on those frequencies
I could replace the card with an intel AX210 one and get wiif6e and better bluetooth but I'd rather not open the device (it's been repaired 3 times under warrantee!) or create more e-waste