Chase Freedom/Freedom Flex 5% bonus cashback categories for Oct-Dec 2023 are
PayPal
Wholesale Clubs
Select Charities
You can activate by visiting below site from Sept 15th to Dec 14th:
https://www.chasebonus.
It can also be enabled after logging into your account and going to 5% cashback. calendar.
Remember it can be activated tomorrow i.e. Sept 15th onwards.