Domains can't be selected by users in Internet Explorer

Hi,

I'm using the Multi Domain plugin together with the Domain Mapping plugin.
So I copied dm_sunrise.php to wp-content and renamed it into sunrise.php
Also adjusted wp-config.php so sunrise is on.

Created the domains in the dashboard. All below domains now point to the wordpress install from gemeentehollandskroon.net:
dghk.nl
annapaulowna.net
hollands-kroon.nl

they all have the status Public.

For all domains is a wildcard (*) available in the dns entries.

Okay, now the problem I have:
When I want to register a site in Firefox I can see only 1 domain name and I'm not able to use the dropdown.
In Internet Explorer I can't see any domain name at all, but I can use the drop down.
You can use this link in your browser or please see the image.

When I want to create a new site within the dashboard, all domains are available as you can see below.

Is this plugin related or has it to do with some (mis)configuration?

Greetings,
Age