If a payment fails, no reservation is created and nothing is held. You can try again from the deal page.
If money has left your account but the reservation did not appear, it is almost always a confirmation that has not yet reached us. Give it a few minutes and check your account — reservations appear under Your commitments as soon as the confirmation arrives.
If it still has not appeared after an hour, raise a support request rather than paying again. Include the amount and the time. Two payments for one reservation is a slower thing to unwind than one payment that is still in flight.
An abandoned payment — one that was started and never completed — is cleaned up automatically. It never holds a place and never counts toward a tier.
