Error after move to new host

[Claust]

After i moved to my new host, all css is missing

I see BO correctly in one browser, but not in others. Frontoffice looks wrong in every browser i try.

I changed to default theme, but still the same..

site is https://shop.vildmedgolf.dk

Site version is 1.7.4.2

Any ideas? 

Edited December 30, 2018 by Claust
added info (see edit history)

[NSN]

You have put your site to maintenance mode so I could not see if I see the same as you.

Anyway, have you already cleared all your browser caches and also the shop caches?
Have you checked if the same problem occurs on other devices?

[Claust]

tried 3 different browsers, safe mode browsing, 2 different computers + someone else helping me tried.

strange thing is that one of my browsers (Chrome on mac)  show BO ok....but when i change anything i'm getting a blank page with 500 error and have to refresh the page again..

[Claust]

I got the site running on the old server, so started over.

- Deleted database and folder

- Copied database contents to new host

- Downloaded all files and uploaded to new host

- Connected database with new settings, made a new .htaccess file

Still I got the same problem... I am now changing all folder permissions to 755 and files to 644 on the new server. Running out of ideas, but thinking it must be some permissions issue?

Server seems fine to run presta

Edited January 1, 2019 by Claust (see edit history)