Notes not syncing correctly

Was using Evernote but today started moving them into Notes on my MBP and all went ok. Notes are a mixture of text, pdf's, forwarded emails and images, but all show in Notes as they should.

However

In Notes in iCloud not all notes or folders have synced and in some instances the body of the note (where it is a pdf or image) the title has synced but the body is just a grey coloured square.

On the iPhone it is the same as iCloud except there are no grey squares - only the note title.

On the iPad it is the same as the iPhone.

Interestingly if I type a test note from each, the note from iCloud, iPhone and iPad sync across to all, but the note setup in Notes on the MBP does not sync across to any of the others.

All are signed into the same iCloud account.

Driving me mad!!!!

Any ideas will be much appreciated.