ScrapeBox ******** Test Plugin Not Working

I installed the do+follow test plugin and used a list with 1000 approved wordpress comment links to check, which one of them are do+follow and which are nofollow. Unfortunately the tool states only N/A on 99% of all backlinks.

I thought the do+follow test tool can check wordpress comments, so how can it be that the tool doesn't work. Of course most of the backlinks have the status "completed", so it's not an default error.

Has anyone an idea?