Koalla Ticket-Games: Please, those forums are English only.
When you do speak another language, please provide a translation (even a google translation) along your answer.
Also don't post multiple posts in a row, do use the edit option in the top right of your post (the pen).
As for the issue at hand, it seems you are not exporting your project correctly using the "Scirra Arcade" export option. If you did, you would not have to make your archive yourself, the export is providing you with a .zip file.
Or possibly are you using an outdated Construct 2 version.
If you use the latest R244 release, and export from it, it should work.