Please explain

Click "Apply" and post generated .conf. You can check for errors in self-tests again too.

You have pasted custom location into another location. Remove that. You don't need additional "custom configuration", which is specific to Wordpress

You don't need the domain name to access website using IP. Just remove the "domain". Also please post your .conf file

Apparently your domain contains "/" and domains don't do that.

You have a bad domain name (see Domains section) and also something is wrong with your Content entries (having your /etc/nginx/conf.d/owncloud.conf would help).

Check the status of self-tests, which is visible on main Websites page.

Not to offend you, but you're missing the step where you explain what exact problem you are encountering.

Hi, please give information on the problem ("Read this first" on the support frontpage).