Hello,
1) You may try the bundled plugin Massive Addons (XStore > Plugin installer) and Modal boxes of the Massive addons https://massive.mpcthemes.net/modal-box/
2) Product image depends on the code you use on the home page https://prnt.sc/x7ong9 I would recommend you to use the Products element to display products there instead of the custom code https://prnt.sc/x7oru1 and https://prnt.sc/x7osv3
3) I don’t see problem with the footer copyrights on the home page https://prnt.sc/x7ou7c
Regards
