They sent the following email out on April 7th. Maybe it was overlooked or went to spam?
Also, you might want to follow the Star Partners forum area here at CAP since Conrad does respond there and this was mentioned there as well. 
http://www.StarPartner.com changes domain to .eu
Star Partner would like to inform you that due to domain issues http://www.StarPartner.com we will be changing its domain to http://www.StarPartner.eu
This change will not alter anything other than the domain name. You will still be able to make use of everything prior to the change – Banners, Reviews and Reports will be unaffected.
If you wish to contact us, you can do so by emailing us on the following addresses:
Affiliate Manager: [email protected]
Support: [email protected]
Webmaster: [email protected]
Bookmark the new address in your browser, use your old login details and log into http://www.StarPartner.eu right away.
Regards,
Conrad
Affiliate Manager