Simplex may take longer than expected to process an order.
You can check on the status of your pending payment by copying and pasting your ID # (sent to your confirmation email) and paste after this link:
The link above (with your ID #) will send you to this landing page hosted by Simplex. Your status will reflect here (pending, completed, or canceled).
If for some reason you do not see your payment status, please reach out to Simplex directly https://www.simplex.com/submit-a-ticket/