I am trying to get Adobe Premiere Pro. I had it before but someone on here told me I needed to replace my order rather than renew my current subscription. So I did that and chose monthly payment. It said my month-to-month payment would be $21. When I went to look at my account it said I chose Creative Cloud single-app membership for Adobe Premiere Pro (one-year). I did not choose that. I just need the month-to-month Adobe Premiere Pro plan.
Let me get that checked & update you shortly. The next billing date is September 28th 2015 which is an exception approved as you agreed to continue with the present plan.
If you still want to change plan please check: Creative Cloud pricing and membership plans | Adobe Creative Cloud
Normally the month-to-month plan cost more than that ( I think 29.99 US$ ).
You have two plans :first with annual contract paid monthly ( 19.99 US$ ) and the second paid monthly but without a contract ( 29.99 US$ ).