The requester will not be able to cancel the transaction after the deposit is placed. However, the traveller may still cancel the request in the event the requested-for items cannot be found, is out of stock, etc.
This is to ensure that travellers may proceed with the purchases without fear of requesters backing out at the last minute, or after the items have been bought.
If the traveller has yet to purchase the item, you may communicate with with him/her via the private chat function to enquire whether he/she is agreeable to a cancellation.
Under no circumstance will Airfrov allow for the transaction to be cancelled without the traveller’s knowledge. This is unless the traveller fails to deliver within the stipulated 7-day grace period.