This incident has been resolved.
Jul 20, 16:21 PDT
A fix has been implemented and we are monitoring the results.
Jul 20, 16:09 PDT
The issue has been identified and it was determined to be limited to a single status page. The rest of the customers are unaffected.
Jul 20, 15:51 PDT
We are continuing to investigate the issue with SMS opt-in confirmations. It affects only SMS opt-in notifications for page subscribers. Incident subscribers as well as other notification types are not affected.
Jul 20, 15:24 PDT
We are currently investigating an issue affecting opt-in confirmations. Customers are unable to subscribe via SMS. Existing subscribers are not affected.
Jul 20, 14:56 PDT