This message is from Remote-Learner, our Moodle host:

Remote Learner will be conducting database maintenance August the 15th from 01:00 AM EST until 04:00 AM EST on the Kansas City data center. During this window we will be improving the performance and resiliency of our database system. During this time you may experience periods with loss of connectivity to your hosted site. Thank you for your patience as we continue improving our services.

Sincerely,

Remote-Learner Technical Support