You are welcome 
No, maximum you can get is 0.01btc
Thus no difference between upgrading and non-upgrading avatar and signature for me?
Yeah, you need to be at least on Member level to get more than 0.01BTC.
so if i open new acct, and wagered on Primedice not reach up to 1 btc. so not eligible for this cashback?
Only one account per person should be entered. To be eligible you should either have that amount wagered or 25k rolls.
As long as you want.
or the moment you get the amount in your account balance. 
No, plan was to release payments once every couple of days.. and then I got sick.
Viruses..
I can get maximum 0.04 if i will make a bet amount 0.1 and loss it? (Suppose i will upgrade signature and avatar).
No, maximum you can get is 0.01btc
Thus no difference between upgrading and non-upgrading avatar and signature for me?
Yeah, you need to be at least on Member level to get more than 0.01BTC.
so if i open new acct, and wagered on Primedice not reach up to 1 btc. so not eligible for this cashback?
Only one account per person should be entered. To be eligible you should either have that amount wagered or 25k rolls.
I have a question: for how long do we have to wear the avatar/signature to get the "exclusive benefits" in this promotion?
As long as you want.
or the moment you get the amount in your account balance. Would wait till 15 march for getting this giveaway or we will get it earlier? Anyone get yet?
No, plan was to release payments once every couple of days.. and then I got sick.
Viruses..