Did not quite understand where you got the time 45 minutes. I see that less than 5 minutes, since we only received 1 confirmation
Your mixer automatically chose 45 min as the delay time (waiting time) for me. Doesn't that mean that after 1 confirmation, I will receive the coins in 45 minutes?
Anyways, I received the coins (with a transaction fee of 18 sat/byte, which is higher than what I would have chosen). Maybe let the users choose the transaction fee as well?