problem to add a device in OpManager

problem to add a device in OpManager

I am trying to add a device in OpManager, but after the tool indicates that the device was added, type in the ip and it says that the device was not added and prompts you to add, how to fix it? or how can I do to add the device when it happens this problem?

OpManager is my version of 8812.

                  New to ADSelfService Plus?