Slow SMS and email verification sending

We have identified an issue with the SMS system where it takes a long time to send the text to the participant. We are also seeing similar delays and behavior when attempting to resend the email verification link. In most cases, it will eventually send both the email and the SMS, but it can take 30-60 seconds and will often display a blank error screen after it's sent.

We are investigating and will update when we know more.