After hearing about GK's woes, I have been reading the Site5 comments on the web. The great thing about Site5 was that we would post a ticket and get a real intelligent answer back within the hour. I haven't had to raise a ticket since the migration to Endurance, but it does sound like I have just been lucky. People seem to be waiting 7 days for an answer to tickets, and when they get it, it is a "We are working on it" type answer or "The server appears to be working fine" type answer. They are just not acceptable answers and when there is a problem. There has to be same day service.
Looks like I may have to look for a new host as well. Whatever I choose, I will only look at hosts that support the automatic renewal of LetsEncrypt free SSL certs (since they expire every 3 months).