SignNow + Rakuten

Hi.

I have Rakuten account and looking at signNow, which will give "Up to 50,000 Points" --

50,000 Points for signNow API
37,500 Points for signNow API Starter
2,000 Points for All Other Non-Excluded Items

I am trying to understand, which one is signNow API. If I go to Signnow website and to Pricing I see -

Business - $20/month
Business Premium - $30/month
Enterprise - $50/month
Site License - Contact Sales.

Can someone help me with this, which one is eligible for 50,000 or I am missing some bigger subscription, which would make me eligible for so big points.

Thanks