I am encountering an issue with the ?vp_page parameter being generated in the URLs on my WordPress site. Despite adding the Disallow: /*?vp_page= directive to my robots.txt file, the validation in Google Search Console keeps failing, and the pages are still being indexed.

1-How is the ?vp_page parameter being generated?
2-What are the best practices or solutions to handle this parameter effectively and prevent it from being indexed?
Any insights or suggestions would be greatly appreciated.

Thank you!

I’ve checked my theme and plugins but haven’t found any clues. Any help or guidance would be greatly appreciated!