@ boeing777er
just go through few pages back and you will know that QR has appointed HIRE RIGHT. Anyways, just go on an answer them. They are from QR to do your background checks. Dont worry!!!
Also, congrats as I guess you are the among the few FTSOs who have received their offer.
@pilot4eva
ME IR doesn't need to be valid at the time of your assessment but your medical should be.
Interview - To be honest, it could be anytime. This is QR. Anything can change anytime. But as of now it won't be anytime soon.