Overdue invoice processing cancels the wrong subscription

[allanlasser]

Problem

process_overdue_invoice (tasks.py:384-387) cancels organization.subscription — whatever subscription the org currently has — rather than the subscription linked to the overdue invoice. If an invoice has no subscription (e.g. a manual invoice), this cancels an entirely unrelated subscription.

```python
if organization.subscription:
organization.subscription_cancelled()
```

Fix

Cancel invoice.subscription instead of organization.subscription. If invoice.subscription is None, skip cancellation entirely — there is no subscription to cancel for that invoice.

Files

• squarelet/organizations/tasks.py