How do I update a customer address?

Hello Enquiries44, welcome to the Community. To update a customer address, you can go to sales> customers >click on the customer and then go to edit in the top right, update the address and then save. This would need to be done in the browser version of QuickBooks. We've included a helpful article here on how to do a customer statement in QuickBooks Online. Any questions let us know we'd be happy to help further.