@Alexander:
1. You can add the following css in “Appearance => Theme Options => Custom CSS” box:
.home footer.entry-meta, .archive footer.entry-meta { display: none; }
2. Yes, as you have added in custom css to use font-family as “Helvetica Neue” which is not there in PC. It’s only there in Mac and apple devices. All the devices which has that font will display that other wise it will look for alternative fonts. Like Arial in your code as you can see the css:
body, input, textarea { font-family: "Helvetica Neue",Helvetica,Arial,sans-serif; }