Not sure what Wyze support told you to try, but I would try turning off Night Vision (or cycle through Auto, On, Off a couple of times to see if a switch in software is stuck), then unplug the power cord for 30 seconds.
If no improvement, I would try a Factory Reset if possible.
Also, there is new BETA v2 firmware released today if you want to give it a try. None of these suggestions will help if there is bad hardware, but might be worth a try. Good luck.