UPDATE:
Hello, we've just implemented the delay function as promised. We only have a 24h maximum limit for the moment as we keep user data for 24h maximum as stated in our terms of service. We are working on increasing the delay duration.
24 hours is too low, to be honest. I have used another mixer (don't want to shill them here) and it was a pleasure that I could keep my fund there for a long time and I can move the fund at any later date. In that way, it's pretty hard to get tracked by someone. You must increase the delay. I don't know how mixero works but with 24 hours only delay, it may get more easier for some party to identify. You can consider having the fund in mixero for an unlimited time so people can use/access them at any later date.
An update is scheduled for tomorrow. The maximum delay should be 168 hours (7 days). Please note that we will keep user data for x hours if the user has selected x hours of delay. Users who select 0 hours will have their data deleted 24 hours after the payment has been created.