Battle boxes?

Good day Trovians

I would like to ask some questions regarding the "battle boxes" that u can get in pvp hours.
i was wondering, I have a [0/5] numbers appearing below every after matches, sooner or later i got my boxes and it was [5/5] now my questions are,

Q1 - Will i get another set of 5 boxes even if i already used the other 5 that i have ?

Q2 - When will i get another set of 5 boxes in my inventory ?

Q3 - Will i get them without playing pvp? or should i play pvp in order to get another set of boxes ?

Q4 - How will i be able to stack those boxes to 10?
I'm planing to sack them up to 20, but how..


I really apologize for having alot of questions. I'm really confused with how it works.