Cnpilot r201 hungs after sometime

Kindly help me
I have a client who uses cnpilot r201
It hungs after sometime. At this time i can ping it through its public ip but i can not access its gui and it goes offline on cnmaestro .
The only way it can be restored is by restarting it.

Previously, he had a cnpilot r190 with the same issue and we replaced it thinking its the router with the problem. What could be the cause of this and how do i solve it

Please share the software version and tech-support log

This is a major bug with the cnpilots. Please open a support ticket and stay on them.