no qr code with new user

Brand new to security camera. Light bulb. App wont accept my sign-up due to no QR code. Tried facebook and says it timed out. I phone 14

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Same problem. Camera worked for months, suddenly disconnected. All other cameras still worked.
I attempted to re-connect the camera.
Power down, reset, etc, even reset router and had the camera right next to the router for setup.
I get to the part where it tries to read the QR code, and nothing happens.
I know the QR function works, I can read these codes elsewhere. I went to the QR code reader in the account/help section of the phone app, and the QR code reads fine.
I have 9 cameras, the Yi 1080p, and the others function.
I took one of the working cameras down to the location of the malfunctioning camera to verify that the signal is OK. That one would not connect, either. When I put the previously functioning camera back to its original location, it would no longer connect and I get the same error when trying to re-connect.
I recently purchased 2 new outdoor cameras, and they both have the same problem, the QR code will not read. In addition, the language on the 2 new cameras is not English.
I removed the SD card to test and still no connection.
I have sent several emails, but each response is the same, the tech does not read previous emails and tell me to do the same steps, ALL of which I have done repeatedly.
I supplied all the information asked for. They want to replace all 4 units. Is this the only option?
If I cannot rely on these cameras working reliably in the future, it may be best to scrap all 9 and get another brand.
ticket number: # 1127090