Hello, IPB seems to start charging my customers twice. 

Here is a screenshot:

 

I'm using paypal payments for a few years, didn't change a thing and now this happens. 

PayPal are completely in charge of when they take payment (unlike other payment gateways, we cannot tell them when to charge the customer). With that type of set up, it isn't really possible for us initiate a duplicate charge unless the customer has gone through the checkout process twice and set up two different subscriptions.

We have previously seen PayPal Subscriptions collect payments a month or more late though which may explain this. You may find that the customer didn't get charged for the previous period.

I have created a support ticket for this so we can look further.