Domoticz

I used still ICY thermostat. Previously ICY deliverd by essent. Since February it is no longer supported by Essent but by I.C.Y. b.v.
I have a supscription. The e-thermostat website (https://www.e-thermostaat.nl/) is working and I can login there. And the e-thermostat app is working to. But Domoticz gives the following error: Error: ICYThermostat: Error login! I have removed the hardware item ICY and add it again, but no matter.

Can Anyone helps me? Or can Anyone helps me to find the code who is used for ICY? Thanks in Advance

Problem Solved. Name resolving was not working. It is still working now

I also have a have Licencie ICY thermostaat.
And also:
Serienummer van uw Hub: 41#########90
Serienummer van uw E-thermostaat: 38#########17

The e-thermostat app is working to.

But when I add ICY e-thermostat in domoticz as Hardware all I can add is username and password.
Of Course that's no problem, but when I Add this piece of hardware I don't see it in the list of devices. How get this working?