Before when you submitted your paperwork to CCL for your benefit did you also provide proof of your shares in CCL? Did you redact your account number when you did that like the instructions said to do?? StockPerks submissions are no different.
They have no need for your account numbers so mark/blacken/whiteout your number, scan or copy, take a picture of the page showing your stock and send it in.
By the way, RCLs submission policy isn't any different.