Customer service and SumUp reviews
SumUp offers an online Support Center answering the majority of questions. To contact customer support, emailing is encouraged, though a phone number is also provided. The opening hours for customer service are 9am – 7pm (EST) on weekdays.
Non-urgent queries over email tend to take days, sometimes over a week, to get an answer to, so it does require patience to deal with SumUp support. The service is geared towards businesses who do not require much in the way of customization. For that reason, the support is mainly geared towards technical queries, payment issues and matters pertaining to your account.
It is limited how many customer reviews there are in the US, but common complaints have alluded to Bluetooth connectivity issues and the inconvenience of requesting a signature for some transactions. Moreover, some merchants have experienced withheld funds due to SumUp’s security protocols, or later-than-expected payouts.