If "GSM error" appears in the display of your DoseCan and there is "No connection to DoseCan" in the log, then there is very little or no connection to the GSM network. This may be temporary due to work done at the telecom operator, overload on the GSM network or because the DoseCan is in an area with poor GSM coverage.
Try to reboot your DoseCan by turning it off and on, using the little black button on the inside of the lid.
If it does not help, we (DoseSystem) can try to solve the problem by connecting your DoseCan to the best GSM provider in the area. Send the DoseCan number (4 characters) to us and we will try to solve the problem.