Hit Scraper is limiting the hits shown on the main list of hits on Mturk. If you choose a minimum dollar/cent amount on Hit Scraper to be scraped that is only how far the main Mturk page is going. I couldn't understand how it went from 314 down to 64 and 3 pages of hits down to only one. This just started happening.
this is happening to me as well (I think I understand what you're saying) and is getting extremely frustrating. I tried disabling all of my userscripts one by one in hopes of singling one out, but it still doesn't work. Mine shows the first page of hits, but from there on (pages 2, 3, 4...) all show 0-1 hit only yet it says there's over 6,300 hits available. mehh.
Since this was from 2018 I don't really remember this too well. Now I think things disappeared on me. I didn't Turk for awhile and when I came back I could not find the hitscraper site. I switched from Firefox to Brave and had to download all my scripts there and never did find the site. What site are you using to access hitscraper? I think some of my scripts are interfering with the functions of Mturk Suite but I can't figure out what the problem is. I can't uitilize the different hover functions and get pop-up information. But at the same time I managed to disable the annoying Mturk built-in pop-up.