Cumulocity will migrate the Sigfox services to a new architecture on 18.3.2019 based on microservices. Therefore we will disable the old endpoint for Sigfox gateway configuration
This means on that particular day any tenant using sigfox devices needs to change their configuration on the Sigfox Gateway Server to replace the mentioned URL to the following setting for legacy Sigfox devices registered with general device registration:
Please see the following link for reference and more informations:
The information is in section
Updating devices registered with the general device registration
If you have any questions please get in contact with Cumulocity Support at firstname.lastname@example.org.