User Activity

I can't find the submit button at the bottom when I try to relist several items together. What's the problem? Is it because there is something wrong with my computer or the internet ? Thanks.
As a basic eBay store owner, how can i make my eBay store more beautiful and attractive to customers? Thanks.
what can i do if the buyer doesn't pay after it shows my item is sold? Shall I pay for the listing if i don't receive any payment?