Yet again I seem to be having issues with Google/Blogger and blog comments. I've yet to check on my other computer but on my new laptop I cannot comment on any blogs - including my own!
So, I'm not ignoring you - just smashing my head against a brick wall!
Now for some detail:
I'm permanently logged into my Google account and Gmail, Google Drive, Photos and Blogger (when blogging) all work sweet as - it's just when on a blog and trying to comment!
If there's a genius out there with the solution then I'd love to here it. If it works I'll even be able to reply to your comment!
Here's my post in the Blogger help forum: https://productforums.google.com/forum/#!topic/blogger/INwaecCzAbU
Look forward to those comments...