@danb35 - take a look at the results from SSLLABS.
https://www.ssllabs.com/ssltest/analyze.html?d=bluehaven.dental
There is an alternative name mismatch for the SNI.
app.getflywheel.com *.getf.ly *.getflywheel.com *.sitesandservices.com sitesandservices.com MISMATCH