Ok i see that you can generate a custom js script and add it to your blogger site and it will redirect to your WordPress site. i looked at that js script and it could cause your site to get devalued or penalized by google for using this type of redirect method. Google and other search engines recommend that you do not use of the meta http-equiv="Refresh" content="0 tag.
This meta tag sends the user to a new URL after a certain amount of time, and is sometimes used as a simple form of redirection. However, it is not supported by all browsers and can be confusing to the user. The W3C recommends that this tag not be used. We recommend using a server-side 301 redirect instead.
But if you are stuck with doing this method then i guess you will have to take the risk.
Note: The blogger to wordpress plugin has not been updated in over 3 years. I cannot test that plugin for this reason and also the reason that i do not have a blogger site to test with.
What i think you may need to do is something like this:
the js script is doing the redirect to your site, but the plugin on your WordPress site is trying to force the redirection into a very unsafe method of redirection once the URL is redirected from your blogger site. that unsafe method is a very common simulated RFI hacking attempt -
What you may be able to do is add 301 .htaccess redirect code to correct this unsafe redirect method.
see this tutorial on how to do 301 .htaccess redirects >>> http://forum.ait-pro.com/forums/topic/htaccess-redirect-code-where-do-i-add-redirect-htaccess-code/
Personally i think the whole approach is a very bad one from start to finish and you will probably just end up with a low ranking website or maybe even get penalized by Google for the redirection method you are currently using.