Comment by direwolf20

No matter their actual costs to provide the service, I'm struggling to see why they should not immediately delete all of your stored files upon cancellation of the storage service.

They are a European company, so you are the customer, not the product and recipient of subsidies. They use less manipulation and dark patterns than an equivalent American company.

You pay, you get service. You don't pay, you don't get service. If they can't bill you, they should try to communicate with you for a few months before treating it as a cancellation. If you cancel, then your choice is clear and you should expect your service to be immediately terminated at the end of the current billing period. If their service is storing files for you, termination of the service means deletion of the files.

There is no need for a grace period when you knowingly and voluntarily make the decision to terminate a file storage service.