Once you clicked on to proceed on the guest checkout and got to the payment part then you cannot change the email address.

Hi @tien95 Yes, we had to add some important fixes and improvements to the system. It is in the testing phase right now and will be released in 1 or 2 weeks.

@Sumit said in custom field customization: addon of QloApps @Sumit thank you

@somethingaround Thank you for your appreciations.. Happy to help!