We have processed the additional changes and implemented a fix. With this, all New Marketing Campaigns sends and contacts exports have been re-enabled. We are monitoring the performance of the fix. Please note, a small subset of customers may still be experiencing a delay in contacts that were uploaded or modified in the New Marketing Campaigns between about 9am MT and 6pm MT. We apologize for the inconvenience and greatly appreciate your patience. Please reach out to our Support team at https://support.sendgrid.com
if you have any questions.