Thanks - sry - I was in a rush yesterday and didn't read through the whole thread - I've added my email address to the spreadsheet you created now.
Was about to send an invite but invite link has disappeared again from my Google+. No idea what's going on. Will try adding you and sending you a post - this worked for me to invite a couple of people two days ago but it too them nearly a day of trying to get Google+ to accept the invite
-- not relevant