Transfers in the Bitcoin system can be in the Unconfirmed transaction state for a long time. Most often this happens due to the fact that one of the operations takes a long time. According to the rules of the Bitcoin network, such a problematic transfer is attached to another block and then follows the standard procedure. If this does not happen, then within 1-7 days the funds are returned to the sender. Our exchange service, unfortunately, cannot affect the speed of processing such transfers. If such a payment is delayed for a long time, then after it is credited or returned to the sender, the situation with the application will be resolved by completing it or canceling it with the return of all monetary obligations of each of the parties. The decision is made in each case separately.