Booked or bought with the wrong email address
A typo in an email address is the most common reason a booking or an order seems to go missing. Everything you book or buy sits under the email you typed at the time, so if that had a letter out of place, your confirmation went nowhere and your account won't show it.
You don't need to pay again. Get in touch and pick what it was, a booking or something you bought. Put the email you think you used in the first box. If you're not certain, tick I'm not sure which email I used, and put the address you actually want me to reply to in the box for a different email. Roughly when you paid helps too.
I can see the payments coming in on my side, so with that I can find yours, put the right address on it and send your confirmation again.
Still looking for an answer? Get in touch and I'll sort it.