You have your firmware numbers mixed up. 2.21.27 is the app firmware for Android from June 2021. The newest V3 camera firmware is 4.36.6.17. Update your android app to 2.26.22 released today.
2 of my v3 cameras are dead after software update to 4.36.6.17.
One which I have not updated works fine.
Nothing happened with 5 v2 cameras.
Contacted wyze customer service and received their response " we can’t help you because you bought your cameras in Home Depot CANADA. Go to Home Depot and exchange it".
They killed my cameras and I have to run around to look for a replacement.