Apologies to all...!
Apologies to everyone that's left a comment that went to my "Awaiting Moderation" folder since this past June...I've just realized that there are 29 comments in there - yikes!! I feel so badly!
I have always received an email when a comment needs approval as only comments made within one week of the post are automatically published. For some reason, I am no longer receiving notification emails of comments that need moderation - and I had no idea! Since I was always notified in the past, I didn't even think to check this folder until now. I have a feeling this has something to do with the changes I made to the blog earlier in the year so I'll have to look into that.
In the meantime, I'll be reading and publishing all of your comments today....once again, my sincerest apologies about this goof. I'll be checking that moderation folder much more frequently from now on!
Update: Mystery solved! Email notifications apparently changed after the implementation of the GDPR this past May. Thank you to Jo from Through the Keyhole for not only letting me know what the issue was but also helping me resolve it (check out her comment below for all the details).