How do I change my email address or phone number? May 30, 2019 02:48 Updated Simply log into your Laybuy account here and find the My Details tab to have these updated. Related articles How do I get in touch with the team at Laybuy? Does Laybuy have a phone number? Trouble logging in - 'Unable to authenticate' I have a new Brand. Can I use my current Laybuy Merchant Account details to integrate? How do I change my trading name?