Does anyone else get this message a lot and know what it means?

I HAVE gotten that one.

However, the one I'm having trouble with right now, is this one. Does anyone know why I'm getting this? She's already friended me.

I have it a lot. I think if you send a comment and they dont reply to it SW stops you sending any more until they reply.

I was getting this for awhile only on photo comments even my own but it went away apparently a glitch

Same thing happens to me sometimes unfortunately