Trouble sending comments or replies to a thread. Help?

[bkjbkj]

My device is a Samsung A8 tablet. I'm using Samsung's browser, which has been fine until now. In the thread Vanessa2, I write a comment and tap the send button in the lower right of the comment box, and the comment sits there doing nothing. My comment is a little lengthy, but longer ones from others on the thread are functional. I sent a couple comments a couple days earlier and they made it into the thread. Since then I changed my handle, but my loginin name remains unchanged, of course. Any advice on getting my comment to sent or what I am doing that blocks it? Thank you.