Cannot create separete KB's

I have two projects under the same account—one with a single chatbot and the other with two different chatbots. I originally started creating them on the free plan but later upgraded to the Standard plan.

Now, when I tried to create a separate knowledge base (KB) in the project that was created after the upgrade, I received an error indicating that I was still on the free plan.

As I understand it, even if we pay for any plan, all chatbots within the same project must share the same KB since it is tied to a specific project. There is no way to create separate KBs within the same project.