We regret the trouble caused by this problem. It should be resolved in the latest version. The testing pipeline for the next updates has been extended with more cases to more effectively prevent problems of this kind from happening.
The bug was introduced with performance improvements a few updates before, and caused the gateway to hook itself to the payment subscription hook on creation.
One of the services was not using the cached instances of the gateways, but calling the method that creates the gateways instead. This led to calling the payment hook for subscription payments twice, which may resulted in double charge for renewal payments.
If you were affected by this, the official Mollie support can provide further guidance, but this should be rectified automatically from Mollie’s end.
For any more questions about this, you can also send us a private message from here:
https://mollie.inpsyde.com/docs/request-support/
Thanks!
Kind regards,
Niklas