I already have MobilePay number Open amount. Can I still use it?

Yes. Your solution still works. It will be phased out gradually, but the launch of the new MobilePay number does not require you to switch now.

The fact that new MobilePay numbers let customers enter the amount themselves does not mean your existing MobilePay number Open amount has been moved over automatically.

If you want to combine Open amount and Shopping basket, you can order a new MobilePay number in the business portal.