The ability to update your password depends on how the organizer of your event set up the authentication.
If the organizer set up your authentication to work with your last name and registration or badge ID, then your password is set to your last name and it cannot be changed, unless you change your last name with the registration company. Please contact the registration vendor in that case to see how you can change your registration details and update your last name on your badge.
if the organizer set up the authentication to work with the organization's membership system, the organizer may have or may not have added the link to the membership site to change the password. In case the link was not included, access the organization's membership page and change your password there first before logging into the app.
In case the app was set up where you create an account directly with EventPilot, then you can click on the link “Forgot Password” on the login page to receive instructions on how to change your password.