Just install a popup Poptin. But it says that I should copy it into Head in every section, where do I do it?. The popup has to be on every side and every product site.
Is this right way to do? Or can I see the popup in another way at shopify?
The app installs the code automatically, you don't need to install anything else.
If you have any other questions or you can't see you poptin, you can have a look here:
Or reach out to our support via our live chat
We'd love to help you!