refine popup in search panel

Have 2 questions related to refine panel in search results.

1. How should we showcase more options in 1 category – should I add individual popup for each category or all options in 1 popup. Have added 2 examples here, 1 is with only options related to one particular category and 2nd is ebay example where we have all options, all category in one popup. You can open this popup from any category see all link. Is this the better way to do it?

2. If I add auto triggered refine (as soon user select option , result get updated) than should I have back to original search link? Or should I add selected options with cross button.