If you need to upload a new style sheet, this can be done from within the platform.
Navigate to Whitelabel > Styles > Add New Style
Your style sheet needs to be saved in .json format, otherwise, you will be met an "invalid" error message.
Please note: This article only applies to rich messaging.
If you are not able to access the Whitelabel section of the Punchh Platform, please contact your customer success representative or submit a support ticket to https://support.punchh.com