Just have a quick question:
I have now added the following rules in my case:
However, it seems this would only stop the robots crawling, but I suppose the URL mentioned above is already indexed in Google, is there anything I can do to no-index the URLs with such query string?
( /?mst_cplfvc_page_epx= )
Unfortunately, we are not the SEO specialists to help you with creating the correct sitemap of your site and robots file, exclude or include the pages from indexing. If you click on the tab you’ll get a little bit different URL than one that you provided http://prntscr.com/lhu8zi . So, I’m not sure why that link was indexed.
If you need help with SEO, please, contact WPKraken team to get help with this.