Currenty the tool is facing some techincal issue and unbale to work, we apoloze for the issue.
In a mean while you can make use of these website for free website audots.
SEOptimer or SEOsitecheckup
Perform A free SEO Audit for your Website and Check for all the Error's to Improve your Website Ranking
Download Free Website SEO Audit Report Template
Really good
Thanks for the comment, we always try to find such ideas to helps the users of knowandask.