Question about Garmin Edge 1030 + Topo Switzerland Pro

It depends on which version of the Topo Switzerland subscription you have. If you have version V3 or higher, it can be inserted into any compatible device. If you have an older version such as V2, then you have the right to unlock it on a second device, if you only use it on one device, you can contact Garmin to unlock it for the second device. However, the older versions are not compatible with the Edge 1030.