You should be worried unless you bought after a certain date. I have all my shares and I bought up until the. 19th, others claim the 21st...can't speak to that...putting the date issue aside....this is legit and you will get your shares.
Hang in there JustStarting Out... The shares will show up soon I'm sure. They have to pay them to you... Your broker is just slow in processing them. Best wishes! :-)