FYI - in case anyone has a similar issues, here is some additional info I received from Evernote Support:
"For the total size of a note, typed text and attachments count, but also the code that builds the note.
In the case of clipped content, the HTML code (the skeleton on the website captured) is also included in the note to recreate it in Evernote. In the case of Ebay clippings, all the formatting that characterize the site, comes to Evernote in the form of ENML, a similar version of HTML compatible with Evernote.
So while there is an overall note limit of 200MB for attachment and general content of a note, there is actually a 5 MB for the ENML. I know that 5MB compared to 200MB looks like very little, but 5MB of pure text (code or typed) is a huge amount of information. If you would type the text manually, it would take you many many years to reach the limit.
While single clipped notes can fit the requirement without problem, many notes of the same or similar content merged together will reach this limit quick. This is because of all the 'behind the scenes' code that you don't get to see. To avoid this issue in the future, if you would like to keep the formatting of the note intact, try merging together clipped website notes in fewer numbers."
This was most likely causing my issue although we can't confirm as I would need to send them a copy of my note which contains personal info.