Our working hours are 9am – 5pm CET during weekdays.

After latest Google Chrome browser update a new issue arose with menu display. 
Please, check this article https://mikado.ticksy.com/article/11648

Okay
  Print

Are you sure you want to do this? Please try again

What to do when I get this message while trying to install the theme: “Are you sure you want to do this? Please try again” ?

This message means that theme zip file is larger than max upload file size allowed in configuration of your server. Please either increase that limit or upload the theme via ftp (second method explained in our documentation).