Authority crawler, stay away. It doesn't work

I purchase the Autority Crawler, to search for expired domains. The program did not start.
after I wrote to the support, they reply back after days saying a new program will be released.
it never came. After a week I wrote back they said nothing about the program update, they said my settings are wrong, after I did the settings program still not working. After 3 weeks program still not working they don't refund the money.

There are a number of options out there that are better than that anyways- the best of them being to just search for them yourself.

If your looking for expired domains you could try domain hunter gatherer or the cheaper way would be to scrape google for old pages full of links and use xenu link sleuth to try and find expired domains.