From our Moodle host:

Dear Valued Client,

In order to increase resilience and reliability of our cloud platform we will be migrating data within our server infrastructure. We will be performing maintenance during our October 4th maintenance window from 2 a.m. and 6 a.m., ET. During most of this period your site will be operational, cron will not be running; a brief loss of connectivity to the internet will occur at the end of the process.

We apologize for the inconvenience.

Sincerely,

Remote-Learner Technical Support