Your remittance will arrive within 2~3 business days, depending if there are holidays or weekends in between.
If there are technical difficulties that require manual approval, it might take several days.
The definition of "business days" is defined by the bank's work days.
【ACE customer service center】
Help Center: https://helpcenter.ace.io/hc/en-us
Business hours: Monday to Friday 10:00-18:00, Lunch Hour 12:30-13:30 (GMT+8)