Hello,
Did you change anything in RUT240 configuration before the issue?
Could you provide some screenshots of when the issue occurs and explain the steps you do to receive the error?
Have you tried to generate new links?
Could you, as an alternative, configure RMS VPN HUB to test your set up, following the guidelines in this video?
Would it be possible for you to send the device's serial number in a private message to look into the issue?
Best regards,