Hi Paul,
Thank you, I have re-installed the newest version, and made a minor change to the code to support your request. I will include that change in the future releases, so you don’t have to worry about it.
To exclude the nofollow articles, I did two things:
1. A filter was made to not show items that have a specific custom field set to value 1: https://i.imgur.com/NN0lCsj.png
2. ..also, allowing items, that does not have that field: https://i.imgur.com/6HKx3Xl.png
Now, those items should not be present within the search anymore. Sorry about the inconvenience again, it should be fine now.