My client only needs webflow basic plan but its priced for the CMS package why does it do this?

Hello, I am about to charge my client using ‘client billing’ but he only needs the webflow basic package, not the CMS which is an extra $5 per month but when picked it states $20 per month any idea on how to fix this or is it just how it is for everyone else. thanks.

p.s. I’m having trouble getting my google maps API to work on google it seems all fine but on webflow when it’s live its grey? I’ve even changed the API key but still nothing?