I have just bought Chuwi Lapbook Plus from Amazon but I don’t Have Wifi.
If your problems are recent after an update, the first thing I would do is a restoration keeping your files: startup, configuration, update and security, recovery, reset this PC and answer that you want to keep your files when asked. A long process will begin, which will last for hours and that you should not interrupt even if it appears to be stopped. Put the charger and wait for it to finish.
Check if your problems have disappeared. If not, retype to perform more checks.