PM's getting stuck in outbox

I’ve tried to send a bunch of PM’s that get stuck in my outbox. Is this normal? Happening to others? How to fix?

Forgive if this is the wrong place to raise this, tried to PM admins but of course, it got stuck in the outbox. Thanks!

It shows up as in the outbox until it is read by the recipient. Cheers, Jules.

Duh! Thanks!