Android 10 Install doesn't scan barcode

I removed my old Android 8 phone and installed Prey on my new Android 10 Pixel3a. It prompts for a login credential but the barcode at the bottom of the Add Device page doesn’t display the code used Android 10 expects. I recall that the last time I installed Prey on my phone, it scanned the barcode.

Is there a way to modify the web site to display to code the QR code is showing until the Android 10 client is working. I can’t add my phone until then.