Links to my website are broken

It's probably time to change my DNS registrar... I'm using dotster.com (old namezero.com) for my websites (http://alinconstantin.com / http://alinconstantin.net ), and I just discovered the sites were not forwarding anymore URLs to the dynamic DNS http://alinconstantin.dtdns.net and http://alinconstantin.homeip.net . For some reason, they decided to change the domain from 'URL forwarding' to 'Parked' which pointed to a page with spam links.
I changed that and now the root of the website redirects correctly, but folders and direct page links are still broken, they display some 'page not found' frame with the same spam links instead of redirecting to the matching folder on the dtdns.net site.

I hope this is not some 'feature' added to get more spam clicks from others' domains. If the situation persists, it will be bye-bye namezero/dotster after 10 years of using their services...

Meanwhile, if you can't access direct links to my website, use instead the dynamic DNS addresses I mentioned above.