You see on your statistics that clicks happened in your emails but the number of openings (as well as the rate) is still at 0 ?
Do you notice that the lead names are different between clicks and email openers ?
There are two explanations for these results :
This is a clicker bot configured in the lead inbox email server. These bots check the viability of links contained in emails. For more information on the subject.
It is also possible that your contacts are using Outlook/Exchange and that they have not accepted the display of images in the emails for the shipping address. On Outlook, the opening is calculated thanks to an opening pixel, which is not displayed until the display of images is accepted. To go further on the subject.