It's doing that for me, too.

For a little while now, when I go to post a comment for someone else, the box clear and it says sending on the bottom but the message doesnt post and it just disappears like I never commented.
Not being able to compliment others affects who comments on my drawings and that makes this no fun...

Thank you for checking this out and correcting this problem. There are such beautiful draws these days, and especially from newbies, I'd like to send my compliments!

Thank you again for all your hard work and efforts to keep this the best place to draw.

Cordially,
Nancy
Streetlevel