How to change monthly payment day?

Dear All,

There was an offer in the Adobe.com site for a monthly plan with a 46% discount for the 1st year.
So I purchased it.

When I purchased this offer was the 14th day of the month.
So each 14th day of the month I pay the monthly subscription.

But this doesn't work very well for me.
I want to change the subscription payment day at the 1st day of each month.

Is there any way to do that?

Thank you very much!!