Yes I came here to say this. The users click the button, get told it worked, but their comment is not visible to them. The fact they can't see it is why they

Yes I came here to say this. The users click the button, get told it worked, but their comment is not visible to them. The fact they can't see it is why they suspect a problem I think. A UX improvement might be to update the success page to show their message back to them with a prominent "Pending review" message very close and very obvious next to their message.