Can not add Homematic IP thermostat type:"HmIP-eTRV-2"

Hello everybody.

I just started using the Homematic Binding and am very pleased so far. Unfortunately when I try to add any of the Homematic IP thermostats (HmIP-eTRV-2), I get the following error message:

2019-05-23 00:08:14.174 [ERROR] [home.core.thing.binding.ThingFactory] - Thing factory (class org.eclipse.smarthome.binding.homematic.handler.HomematicThingHandlerFactory) returned null on create thing when it reports to support the thing type (homematic:HmIP-eTRV-2).
2019-05-23 00:08:14.183 [WARN ] [g.discovery.internal.PersistentInbox] - Cannot create thing. No binding found that supports creating a thing of type homematic:HmIP-eTRV-2

All thermostats get discovered in the PaperUI. But as soon as I press the “ADD AS THING” button, the message: “ERROR - 409 Conflict” appears.
I already cleaned my cache …
So now I am a bit helpless. Maybe this type of thermostat is not yet supported by the binding?

Adding anything else from Homematic works flawlessly: blinds, dimmers, relays …

Thx for your advices!

The solution was to BackUp Openhab and reinstall it again… Now it is working.