[non-English articles provided by machine translation of the English original]
Data retention, ALWAYS: we never delete your data, even after a downgrade to the Free plan. Your records, files and boats, including any you have switched off, stay safely stored and accessible to you.
Data export, ALWAYS: your data is always available to export, on every plan including Free. Take a copy whenever you like.
Storage: the storage quota of your new plan applies. In case your existing stored data exceed the new plan’s storage quota, we will never delete any of your files for you. You stay in control and decide which files to keep, remove or export, and you may upgrade again at any time.
Features: you may lose specific features and/or have lower quota on features available (e.g. advanced dashboard, custom-locations, custom-categories, sharing, etc). Indicatively, if you are a Plus subscriber and downgraded to Free, you may have 300 alerts configured but only 30 can be active, in compliance with your new Free plan. All your already configured alerts (300) will remain intact but idle thus no notifications will be send. Should you upgrade your plan, the idle alerts will be reactivated, in line with your new plan’s quota.