Thanks for the reply David. Actually the Cache dynamic CSS in the Customizer was not checked. I did however clear the plugin and server caches, then checked the Cache dynamic CSS option, saved it, cleared caches again, unchecked the Cache dynamic CSS option, then cleared caches a 3rd time and still no success in solving this issue.
Kinda confused on this one. The only other thing I see related to your suggestion, is that this is a sub-site on a multi-site installation and in the Edit Sites>Settings> section of the super admin view of this sub site, there is a field called “Generate Dynamic CSS Output” with some content in it. I’ll attach a screenshot….
Should this content be deleted?