Page automatically links to archive page

I don’t know if this is the right place for my post. It’s my first time posting so here goes.

One of my pages called “karrosserie” is being shown as archive.php
In a previous install on the server I tried to use this page that way, but I decided to start over.

Now when I publish the “karrosserie” page again it’s still being shown with archive.php

I would like this page “karrosserie” to act as a normal page again.

Link to the website: http://gerbenjanvisser.nl/
You can see the difference between the “karrosserie” page and the “car specials” page. It should both be like the “car specials” page.