If you create offers within Chargebee (Product Catalog 2.0), sometimes Chargebee will send the plan interval incorrectly. 

IE: If you offer an annual plan without a trial, with an introductory offer with a 50% discount. Chargebee presents the plan with a 12-month trial and daily billing. To address this issue, we have introduced a plan "lock" functionality that allows you to lock the previous interval. This will enable our system to accurately track and calculate your subscription charges, making sure that metrics are correct and reliable. Currently, this is a manual process that you will need to request from our Success team. In the future, however, this will be editable in your plan settings👀. If you encounter this issue, please reach out to success@baremetrics.com  to request the plan "lock" functionality and to help get started.