You can verify that your Amazon links are being properly monetized for visitors to your Kit by using the official Link Checker tool provided by Amazon Associates. Here’s how:
Open an Incognito Window in your Chrome browser
Paste the link to your kit in that window
Right click on one of the "View on Amazon" buttons on the page and copy the link.
Paste that link into amazon affilliate program's Link Checker while signed in to your affiliate account (https://affiliate-program.amazon.com/home/tools/linkchecker)
Amazon will be able to verify using the tags on the url that the links in your kit are using a tracking id associated with your amazon account.