I thought this was obvious- however maybe it isn’t….
This is my business website, I cannot have a broken site – Hence, I have corrected the error by reverting to an older version of WordPress. This is why your images of the site show the elements I described as missing, as not missing.
The issue remains unfixed. My site hosts have warned me that WP upgrade keep the site safe, hence we need to find a solution to the incompatibility issue (described in first message)
Thanks and look forward to this finding resolution!