Active Armor will not upload contacts to enable sending callers not in my contacts to voicemail

I recently turned this feature off as I was expecting an important call. When I tried turning the feature back on, the app won't upload my contacts. I've verified that my OS and app are up to date. When I tap "upload contacts", I immediately get an error message that stating that "we hit a snag". I've also cleared the cache, restarted my device, and tried uninstalling Call Protect, for which the Uninstall option is unavailable.