UI Theme Designer Issue

Dear People,

I work sine 2 Week on the "SAP HANA Cloud Platform Cockpit" mit "SAP Web IDE".

To begin i could not use the "UI THene Designer" but i actived in the "Cockpit" unter "Subscription" the "Application : themedesigner".

Now, i could open the sample Application "SAP Fiori lanchpad" and "Explred" with the "Theme Designer".

But, I could'nt open any Appication from "Web IDE" on the same host.

"UI Theme Designer"

https://themedesigner-p1942055008trial.dispatcher.hanatrial.ondemand.com/index.html

application :

https://halloworld-p1942055008trial.dispatcher.hanatrial.ondemand.com/webapp/index.html

But the "Theme Desiner" say me : Please checkhostname. The hostname from "UI Theme Designer" is no same as "application".

Both appkication have the same hostname or ?

I hope, you could help me.

Best regards

Georg