XFileSharing Pro - Questions about Recurring Payments

[nova]

What happens to existing recurring payments if I change the premium users plans (prices)?

Will the users next payment be updated with the new price or they will pay the old amount?

How could I make only monthly payments be recurring?

Thanks.

[krazymax]

If you change price, the old customers will still be billed at the old prices.

i too want to know how to make only monthly payments recurring.