Autocomplete not working

Hi there,

I´m using the latest immocaster plugin with wordpress 4.4.
My Problem is, that autocomplete in Region lookup isn´t working. My javascript is enabled and I tried with 3 different browser types (chrome, IE, Firefox).
And the plugin is connected, so everything should work fine.

Hope anybody can help me.
Regards martini

https://wordpress.org/plugins/immocaster/