Cannot open new thread in SEO

I cannot open new thread in SEO theme. It says:

Invalid Thread specified. If you followed a valid link, please notify the administrator

And also link to admin there is also broken (404)

Is it something wrong with me?

I have removed the domain name from the link in my message and it posted then.

So the error message from forum sw was misleading though the link to administration contact page is still broken there.