Hello,
RMS data usage display is currently broken for the v7.4 RutOS version but is being fixed by the RMS team.
The Status → Network → Mobile menu shows data usage from the modem, which is not date-specific. This counter measures the data usage from the last factory reset of the device, or simply the lifetime of the modem.
Currently, I would recommend checking the usage by navigating to Status → Mobile Usage and selecting the date range you'd like to see the statistics for.
Alternatively, Network → Interfaces displays the data usage of each interface since the last reboot.
We apologize for any inconvenience caused.
Best regards,
DaumantasG