Paid. Your license is on its way.
The license goes to the email you paid with, usually within a minute, from declick@practicalsystems.io. It names the seats or the support tier it covers and is your proof of purchase. Receipts and invoices come from Stripe.
Nothing in declick asks for the key today. Keep it with your other credentials; if a later release checks it, this is the key it accepts.
No email after ten minutes: check spam first, then reply to any Stripe receipt or write to wes@practicalsystems.io and it is resent by hand.