If you are already on Multiply.life, you do not have to set a new account in the QT App. Just use the same email and password. It will work in all three apps.
Put your email and password in. You will receive an email to confirm your account. Then you can sign in and go to Settings/Subscriptions to choose your option.
1. 30 Day free trial
2. Subscribe with a cc
3. Use a code
+ If you signed up for the free 30 Day Trial, you must wait for that to expire before putting in your subscription code