Welcome to the Forum, @jabbatoonces! 
What app and firmware versions are you using?
When posting about issues related to the app or firmware, it can be helpful to others within the community if you include specific versions. Saying “latest” can be somewhat vague, depending on which specific devices you’re using (both Wyze and mobile) and when someone happens to read your topic.
I’m not sure who gave you this advice:
I don’t think that’s entirely accurate. Even though newer firmware versions for some Cams now (and likely more in the future) require newer app versions, it’s also still possible to flash the firmware for some Cams back to earlier versions. In your case, you could consider downloading a prior version of Cam v4’s firmware and then flashing that into your affected Cam v4s. If you choose to attempt this, then please take note of these things:
- Heed the guidance at that second link about using a 32 GB (or smaller) microSD card formatted FAT32.
- Disable automatic firmware updates on each Cam v4 that you flash: Settings ➜ Device Info ➜ Firmware Version ➜ Automatic Update ➜ Automatic Update in order to prevent recurrence of this issue.
- Note that there are certain risks involved with continuing to use older app and firmware versions and be prepared if things stop working in the future. Another recent topic comes to mind, and that might provide some useful context.
Please be aware that this is primarily a user-to-user support community and that someone from Wyze may or may not see your topic. If you want better visibility for your concerns from Wyze within the Forum, then you could consider posting a reply to whichever topic in Wyze News corresponds to the firmware version that you believe is the cause of your problem. Again, it would be important to note both your firmware and app versions when doing so.