Thanks for following my partner's recommendation. Looking at the image you sent, I would like to know which firmware version is your RUT240 currently running? If possible, try to update the firmware version to the latest one. You can follow the steps described in the video below to achieve that:
As a recommendation, please double-check your LAN-connected device has port 22 opened; and if your LAN device configuration or an integrated firewall feature(if available) is not blocking the traffic from your router to your device.
It would be helpful if you could share more information about your LAN device; this information will give us a clue about what kind of problem we might be facing.
I will keep an eye on your response.