Hello,
1. The reason that you don’t see the “Compare” button on the mobile menu is that you don’t display it on the desktop menu. The “Compare” button in the mobile menu is inherited from the desktop menu.
https://prnt.sc/22aih8n
2, 3. I checked the “Compare” and “Wishlist” buttons and it seems that your custom loader interferes with the proper operation of these buttons. Please remove it and check the functionality of these buttons.
https://gyazo.com/6d60930dc5c23bda35be7f54d60206ac
a. Unfortunately, our HTML structure doesn’t allow us to show descriptions without hovering.
b. Please remove your custom loader and the loader by default will appear.
d, c. Sorry, but we don’t have such functionality, we also don’t have a custom code for that.
Kind Regards