Hello @Peter60LQ,

Welcome to the Klaviyo Community!

For starters, if you were using the prebuilt Product Review flow Klaviyo offers, it actually is expected behavior that clicking on the CTA will lead you back to the product page of the product that was purchased. Because the CTA is expected to the recipient back to the product page, the instructions you found in the Link Customers to the Review Area on a Page subsection of the Creating a Product Review Flow Help Center article is highlighting how to apply anchor links to your product page. This would allow users who click on the CTA to be brought to a specific spot on the product page to submit their review; such as an embedded form or a subsequent hyperlink or button that says allows users to navigate to a separate review page. 

@Mailbox Manny briefly mentioned this in their comment below: 

Since it sounds like you may have a separate page you are gather these review from, instead of using the default URL syntax for the CTA, you may want to customize it to be pointed towards the URL of your review page. I suggest taking a look at the following Help Center articles we offer on building and using dynamic event data in your emails:

• How to Build Dynamic Blocks in a Flow Email
• How to Build Dynamic Blocks in a Flow Email (new editor)
• Repeating a Block Based on Dynamic Data

I may also recommend taking a look at some other additional resources from our Community touch upon a similar subject of further understanding how to build a product review flow. I’ve included a few below that may be helpful:

I hope this helps!

David