The booking window when using the ClassPass integration must be a rolling 7-day booking window. This is because ClassPass controls the restrictions for booking on their end and they use a rolling 7-day booking window.
If you try to use the class overrides in Mariana Tek, it will cause issues for customers. ClassPass will still show the class, but the customer won't be able to be able to reserve the class. The customer will get the error message: “Please book closer to the start of the class."
If you have questions about ClassPass booking windows and how it impacts your site, please reach out to support!