Testing my website (anonymous) but the boost product stop appearing

Hi, guys. How are you today.

Im localy testing and creating my new ecommerce.

I have to do a lot of tests and I read at the forum that, if the user already bought (ogged or unlogged) that produtc, the upsell wont appear anymore.

But I need to make a lot os tests. Event If a close and re-open the anonymous tab on chrome, the upsell is not appearing anymore.

For example, the products upsell images was taking a long time to appear. How can I test it if I can’t see the product at checkout anymore?

Do you have any solution for this? I constantly need to test and check the ecommerce situation before releasing it.

Thank you