1. Yes on xdk and cranberrygame. Not in production but with adhoc. There is a problem with Intel XDK ( i am able to build it with production certificate) while uploading the ipa file to itunesconnect and I am interacting with XDK support to resolve the issue.
2. Have not tested with internel tester as uploading to itunes connect does not work.
3. I am only testing with sandbox mode. Once I resolve the previous issues I will
4. I am not getting any store login unless I press the sprite. But sometimes once it comes it keeps on coming for three or four times. I have seen this issue earlier on unity also.But as you will go to production it will not happen.
I suggest you to buy the cranberry plugin sets that cost US $ 25. I am getting good support from the guy to make progress.