Hey Its asking for active key -> I have my master key like I am able to do transaction and also post > i have two keys saved and none of these are getting accepted. Earlier on steemit you could access all key in settings sections. Where is that option now.?

You can access all keys here:
But what you can see depends on what you sign in with. You can't see a more secure key than what you sign in with. If you want to see your active private key, you need to sign in with your owner private key or your master password.

More info on keys is here:

Thanks @kenny-crane I’ve been looking for this information...