Hello Dionizio Find,
Please refer to our theme documentation here: https://xstore.helpscoutdocs.com/article/140-xstore-size-guide-on-product-page for instructions on how to proceed.
We have also prepared a video tutorial on our test site for your reference. https://www.veed.io/view/af01e837-ae60-4310-858a-d7788b50310c?sharingWidget=true&panel=share
Best Regards, 8Theme’s Team
