Ability to use premium templates as free user via https://stripo.email/templates/?utm_source=viewstripo&utm_medium=referral

## Summary: Hello, I found security vulnerability in your web application, another business logic. ## Steps To Reproduce 1. Go to https://stripo.email/templates/?utm_source=viewstripo&utm_medium=referral 2. Choose any premium template and click ```use in editor``` 3. Then sign in to save and it is in your templates ## Supporting Material/References: Down there is video showing everything * [attachment / reference] ## Impact Lose of business