extremely frustrated with the Smart Lock

After spending several hundred dollars with Simplisafe-- and loving all the other products-- I'm extremely frustrated with the Smart Lock. I tried installing it with our old Kiwkset single cylinder lock (Deadbolt #1), but the old lock was keyed on both sides of the door, so the tailpiece assembly was too long to accommodate the Simplisafe lock. So I bought Kwikset Deadbolt # 2 (keyed on one side of the door). The tailpiece and thumb turn-- with the red adapter to go with the D-shaped tailpiece-- did not line up. (see photos) The adapter on the tail piece was at 4 o'clock, the Simplisafe thumb turn socket was at about 2 o'clock. After spending close to an hour on TWO different calls with SimpliSafe customer service, the last lady I talked to suggested getting yet another new deadbolt. So I went to an actual locksmith, described the problem, showed him the photos and got Deadbolt #3. Exact same problem. The thumb turn needs to turn another few degrees to align with the tailpiece and adapter. The last person I spoke to in Customer Service suggested I call a SimpliSafe technician to come look at it at MY expense. Ummm... no. What the heck, guys? What deadbolt will your product work with? Seems like you should know this.