In the Transfer section, check the status of the transfer and the registered email.
You can cancel or update the email there.
Ask the user to check the junk mails.

In the Transfer section, check the status of the transfer.
If the ticket has not been download, you can take it back by cancelling the transfer.
You can cancel or update the email there.

Yes, you can transfer a ticket as long as it is not beeing used. That is to said that the ticket must have scanned out when you exited the circuit.

You can assign the ticket on your own phone. You will have to scan the ticket from your smartphone.