Have you tried changing a few words and trying to send it like that? Can you post other comments? That's weird!
yeez i had the same thing today so annoying :D
I did try changing it three or four time(it didn't work). The problem might be because there is a wats app link in the comments but I have seen people send those links before so I dont get it.
It indeed is it happend to me quite some times too, but not where it didn't work for so many times.
Why the heck won't this work there is this one comment which I have tried to get posted for some six times over the past two or three days, why mangago why won't you let me? （/TДT)/