Hi robleo,
Your admin log-in page appears with the following link: https://www.autorijschooldiva.nl/wp-login.php
Regarding the missing images, the error report shows that your images are not in the expected folders:
Failed to load resource: the server responded with a status of 404 (Not Found)
https://www.autorijschooldiva.nl/dev/wp-content/themes/Slated/images/social-profiles/linkedin.png Failed to load resource: the server responded with a status of 404 (Not Found)
https://www.autorijschooldiva.nl/dev/wp-content/themes/Slated/images/social-profiles/facebook.png Failed to load resource: the server responded with a status of 404 (Not Found)
https://www.autorijschooldiva.nl/dev/wp-content/themes/Slated/images/social-profiles/twitter.png Failed to load resource: the server responded with a status of 404 (Not Found)
https://www.autorijschooldiva.nl/dev/wp-content/themes/Slated/images/social-profiles/email.png Failed to load resource: the server responded with a status of 404 (Not Found)
https://www.autorijschooldiva.nl/dev/wp-content/uploads/2012/12/but4a.jpg Failed to load resource: the server responded with a status of 404 (Not Found)
https://www.autorijschooldiva.nl/dev/wp-content/uploads/2012/12/but2.jpg Failed to load resource: the server responded with a status of 404 (Not Found)
https://www.autorijschooldiva.nl/dev/wp-content/uploads/2012/12/but1.jpg Failed to load resource: the server responded with a status of 404 (Not Found)
https://www.autorijschooldiva.nl/dev/wp-content/uploads/2012/12/but3.jpg Failed to load resource: the server responded with a status of 404 (Not Found)
https://www.autorijschooldiva.nl/dev/wp-content/uploads/2012/12/but1a.jpg Failed to load resource: the server responded with a status of 404 (Not Found)
Hope this helps you to pin down the issue.
