Can't complete developer registration - SMS code not received after "device not recognized" error

I'm trying to register for a Meta for Developers account to build an app, but I'm stuck at the verification step. On my first attempt, I was able to get past the SMS verification, but then I received an error message saying my device wasn't recognized. Since that happened, I haven't been able to complete registration at all because now I no longer receive the SMS verification code.

I've tried multiple times over several days, waited well beyond the 30-second delivery window, and confirmed my phone can receive texts from other services. My number is a regular carrier number, not VoIP, and isn't linked to any other Meta developer account. It seems like something on Meta's end may have flagged my number or account after that initial "device not recognized" error. Has anyone else run into this issue or found a workaround? I've also submitted a support request through Facebook but haven't heard back yet. Any help would be appreciated.