Before merger - 2-4 days after the stay

Now - never. You have to submit a missing stay request and then reply with your invoice and then reply that your stay still didn't get awarded and then insist that you are indeed eligible for the stay rewards. Each step will take 9 days for a reply and each reply will be a notification that this has been forwarded to someone else or there is nothing they can do.

so no need to worry about how your options are set.