1- Should i change dates in my signature as you mentioned above or is it updated in OP?
I've updated the signatures now. There will be another minor update soon.
2- Spreadsheets are not weekly updates as i see no stakes yet. When it should be calculated??
They will be updated soon, and after that updated weekly.
3- Just two days remaining for week 04, if i make 10 posts before Thursday, would i get stakes for the current week?
I can't say anything until I evaluate everyone individually.
4- Posts in bounty campaigns (like this one) which is not a social media report or a pump post, will be accepted as a valid post?
Of course not.