Load more stops after certain number of clicks

Describe the problem.
I have created a siitemap to click Load More button and scrap the reviews (Using Element Click). However i notice that unlike other websites, here it stops after retrieving 176 reviews/rows. Why is that so? I'm unable to crack it

Url: http://example.com
New NordicTrack Commercial X22i Treadmill | NordicTrack

Sitemap:

{"_id":"norditrack_website","startUrl":["New NordicTrack Commercial X22i Treadmill | NordicTrack preview","type":"SelectorElementClick","parentSelectors":["_root"],"selector":"div.prod-ifit-review-item","multiple":true,"delay":"3000","clickElementSelector":"div.button","clickType":"clickMore","discardInitialElements":"do-not-discard","clickElementUniquenessType":"uniqueText"},{"id":"Review","type":"SelectorText","parentSelectors":["element preview"],"selector":"p.prod-ifit-reviewer-message","multiple":false,"regex":"","delay":0},{"id":"Author","type":"SelectorText","parentSelectors":["element preview"],"selector":"p.prod-ifit-reviewer-name","multiple":false,"regex":"","delay":0},{"id":"Review_rating","type":"SelectorGroup","parentSelectors":["element preview"],"selector":"svg[viewBox="0 0 14 14"] path","delay":0,"extractAttribute":"fill"},{"id":"date","type":"SelectorText","parentSelectors":["element preview"],"selector":"p.prod-ifit-workout-when","multiple":false,"regex":"","delay":0}]}

One of the workaround is increasing the delay to 20000ms