There is a strange bug on my own site. Somehow i cant change the header, there is an issue in xstore https://gyazo.com/0108fc372a7a9957f710dd7ab0c2ec05
also on mobile there is an issue on the website, i cant change and see a weird view of the site: https://gyazo.com/32a763b191e4aafb8e737fb076a0fc54
https://gyazo.com/4f10e480472377535420cce9ab02c525
i have put the site on another server because i thought it was a php issue but that didnt make any difference.
How can i solve this?