i think the right way to ask CIMB was, is cardup eligible or not, and not what the payment is used for. Rightfully, the bank will not know what transaction it pertains to
I'm not sure if the CSO will be able to tell you as I had email CIMB to check whether merchants like Foodpanda, Deliveroo are considered dining or online, merchants like Redmart and Fairprice On are considered grocery or online and whether Grab and Telco like Singtel, MyRepublic etc are considered online. The reply from CIMB is they are unable to advise until it had been charged as the merchant code is set by Mastercard and Visa.