Hello, Jörg,
Thank you for contacting us.
I was not able to recreate your issue, but I guess this could be caused of incorrect metrics.
Please follow these steps in order to check if it helps:
- Navigate: Interfaces - Mobile SIM1 interface - Edit - Advanced settings;
- In the line "use gateway metric" enter higher number e.g. 3;
- Change WAN interface metric to 1.
- Save and apply configuration.
Please, keep in mind, that SIM card in passive state could use a small amount of data.
If this does not solve this issue, please provide a troubleshoot file or configuration backup to me, to check what cause this.
Best regards,
Sigitas K.