I am already a paid user in CRM and I have purchased the CRM Plus plan now. How will my payment be adjusted?

I am already a paid user in CRM and I have purchased the CRM Plus plan now. How will my payment be adjusted?

If you have signed up for CRM Plus and you are already a paid user in CRM, your payment will be adjusted on prorata basis based on your subscription date so that you don't get duplicate charges.