I am facing issue with my OPManager . As i was monitoring almost 250 devices VIA OPManager (Servers , Routers, Switches , Time attendance devices, Firewalls, Proxy devices ETC) but OPManagers stops reading all devices at once. 

Even i am using licensed version of OPManager. 

Only AMS (Support contract is expired) . 

Since the AMS contract expired i am facing issue. 

As per logic if i have valid license it should work properly either the support contract is expired. 

Please need help to troubleshoot .