All sites down: Error 502 (bad gateway)

Every website I have with the domain homesteadCloud.com is not working. You can't login to site builder and they all give me the error message 

Error 502 Ray ID: 4d826a556ba2c637 • 2019-05-17 03:13:25 UTC Bad gateway

one of the site examples is http://www.legalizeND.homesteadcloud.com