Say you have a bunch of customers who have already paid through your old system, and now you want them moved over to Simplero so they have access to content, site, emails, or anything else associated with your product.
There are several ways to do this. Before you decide on the best option you will want to ask yourself a couple of questions.
Create a secret price for the dollar amount they still owe you.
They'll have to go through the regular checkout form, getting a chance to fill out any additional fields you've added, and will put in their payment information.
Once they have completed their purchase you will need to go into your old system and cancel any payment set up over there. Best practice to do this would be to add a trigger to the product to send you a notification email each time someone purchases so that you will be reminded to cancel the original person before you double charge them.
Note: If you are setting this up as a subscription or they still have time before their next installment is due you can set up their secret price with a "free trial" that would end at the time that their next payment comes due.
Create a secret price of $0 for your customers.
They'll have to go through the regular checkout form, getting a chance to fill out any additional fields you've added, and they won't have to pay again.
If you have a lot of customers, or you want to automate things, and you have someone who can write code, you can also use our Webhook feature.