Change URL on Bluehost.

I would contact Bluehost with this issue. They are in a better position to get it resolved for you, and having worked with their customer support on behalf of a client in the past I can say that they are pretty good about sorting things out.

You probably need to use a tool like https://interconnectit.com/products/search-and-replace-for-wordpress-databases/

With this, you can find all instances of
66.147.244.230/~danielzu/danielzuidijknet
and replace them with
danielzuidijk.net

If that doesn’t work, I would follow Shaun’s advice. Bluehost are extremely helpful when it comes to troubleshooting WordPress.

Bluehost has a help article for how to change it also:

https://my.bluehost.com/cgi/help/wordpressurl

If it changes back on its own, you have a plugin doing it and should disable them all to test.