Crashes, no help available – Google Smart Lock Review

I’m moving from an iPhone 6S to an SE 2, both at iOS 15.2. I’m locked out of Google Voice with 2FA. When I try to authenticate with Smart Lock and a Bluetooth Titan Security Key, Smart Lock crashes every time at the step where I’m about to enter the Titan’s PIN. Google has no help available to address this situation
Review by 3glot on Google Smart Lock.