My Verizon app can't verify device


While it is wonderful that VZW is so supportive of unlocked device on their network, such as my OnePlus 6T, it is a shame that they refuse to support account access through the My Verizon app one these devices. The only way to log in with the app on my device is to reset my password everytime, otherwise I am prompted to verify my device and then told it is not eligible for SMS. Contacting support I am told it's a known issue and just need to wait it out. Why is account access from unlocked devices restricted like this?