Indirank not able to detect my feed

I suppose there was a feed fetching error from the Indicrawler, which is common.

I see that your feed is fine on your Indiblogger profile, so I don't think it's on your side.

The solution would be to open a ticket with Indiblogger support, and report the problem, so they can help you out.

I am getting this message, what should I do?

There was a problem detecting your feed. When you access your blog using Firefox, click on the rss feed icon in your address bar. Do you see a valid feed? If you need help, do ask around at the forum.