Greasy Fork

Error on amazon.com, doesn't show "smid=", it can't link extractly other price products.
When full link, it's about 21$
https://www.amazon.com/gp/product/B0083A0BIA/ref=ox_sc_act_title_2?smid=ANNSJU9W28Y9J&psc=1
When shortened, it's respond alternative product, about 27$
https://www.amazon.com/gp/product/B0083A0BIA

I am working on a new updated version of this script but I cannot see what purpose the smid param has? Can you provide some updated examples and screenshots? https://greasyfork.org/en/scripts/432387-general-url-cleaner-revived