Yes they are reversible . They come with very easy to do instructions.
NO -unless in a very abrasive air quality conition.
You have to bring them to your Home Depot store & they will key them alike for you at a nominal charge.
You can't that i know of however your local Home Depot store can re-key as many lock sets as you need for 45.00 per lock set. I had three lever lock sets and one dead bolt all keyed alike.
It sure does, however, I changed it my deadbolt lock to match the color. I believe Home depot can re key the deadbolt to match the entry lock as well. Cliff
I purchased three at one time. I'm not sure what the problem could be however I suggest you delete your order and try again from scratch.
I didn't see that in the Q&A, but took the 3 sets I bought to the local Home Depot, and they keyed them the same in about 30 minutes with no charge.