1password 7 working on Iphone, but cannot login online.

It says the password is incorrect. Is the master password for the IOS app the same for my account online? I even tried downloading and installing the app for Macbook but when I scan my qr code and enter the master password, it says the credentials are not correct.  Please help, I want to back up my passwords somewhere, have access to them onlline, and upgrade to 1password 8. I am totally stuck.