Thank you Mark and James. Sorry for the late feedback.
Contacted Hostgator…very helpful within minutes.
They “enforced” my SSL Cert. (whatever that means)
I went into my web page WP dashboard/settings and added “s” to the end of my URL HTTP.
Now everything works well. I can log in with the new version of Firefox with no issues.
Again, thank you. You guys were very helpful and got me on the right track!