*Booker's system status will be updated within 15 minutes of an issue.
1/4/2019 12:15 PM ET: Mobile Carrier for SMS notifications is no longer required for feature levels Standard or above and the issue is resolved.
10:30 AM ET: Booker Product and Tech team are reviewing the issue and discussing resolution.
9:00 AM ET: We are aware of an issue where accounts are required to enter Mobile Carrier for SMS notifications. This is impacting feature levels Standard and above. We are looking into resolution and will be providing updates here.