schlorian

Thank you, this hint was very helpfull. Now it is working fine.

Hi Angus

Thank you for your answers. There was WP Super Cache installed, which I have disactivated now. I disactivated also another plugin which could possibly block material design: Meta Generator and Version Info Remover.

The code is identical with what you published on your demos-page. It will be easy to adapt thes as soon as we have succeded to debug it.

Thanks, Schlorian

Thank you! Now it is working ??
Deactivating was not enough. I deleted the plugin and manually deleted the updraft-folder. After re-installation everything works fine.

Best regards
Schlorian