Could it be that the ISP recognizes the router? The SIM is supposed to be used only in mobile devices. Due to court decisions the ISP is not longer allowed to distinguish between mobile devices and routers. Normally everything should work fine.
Could it be that the ISP recognizes the router? The SIM is supposed to be used only in mobile devices. Due to court decisions the ISP is not longer allowed to distinguish between mobile devices and routers. Normally everything should work fine.