If your phone device, such as AllWorx, uses Google SMTP service for email delivery, Google's recent security updates (approx June 2022) might require changes to your phone device's SMTP settings. Otherwise, your phone device might not be able to send emails anymore.
Google's new security updates made two-factor authentication manadatory for many google accounts. Your phone device may require updates to continue sending emails via Google SMTP servers.
Consider generate a google account App password and configure into your phone device.