You can still log in using your phone number. Once you’ve logged in, you can change your email address. Click on 'Profile' in the Bringme app, then click on 'Account', and change the email address there.
If you don’t have access to your phone number either, please contact our Help Center to have your account deleted. Ask your admin to add you as a user with your current email address or create a new account with your current email address.