HANA Trial could not open IoT cockpit

Hello,

I am trying to user service IoT. on IoT I go service.

I enabled service. Assigned appropriate role to my user pxxxxxx.

Trying to get into cockpit:

https://iotcockpitiotservices-pxxxxxxtrial.hanatrial.ondemand.com/com.sap.iotservices.cockpit/

But instead of getting cockpit page its keep loading with messages:

such as:

Could not load device type

Could not load settings

Could not load message types

I know I was able to get in about month ago. But now not any more.

Thank you