Solving 403 Errors with WP All Import Pro step 4 of import setup

In some server configurations, proceeding to step 4 of the import setup results in a 403 server error like page not found.

All you need to do is change the word template in the url to options and press enter.

change &action=template 



That will load the next step in WP All Import Pro where to set the import options.

Works like a charm.