You say this is a brand new T7, is it absolutely a brand new camera, as opposed new to you? If so, and you got it from a bricks and mortar location, I would suggest approaching the store you got it from and asking for their help because they can see the camera in real time.
When you say "My manual mode is working but not my auto." are you talking about the mode dial - the one that indicates M, Tv, Av, M etc., located on the top of the camera body?
If you are saying that your lens is working in manual mode and not auto mode, then it would make sense if you have not set the switch the side of the lens (I am assuming you are using either the 18-55 or 18-135 lenses) to from MF to AF. If the lens is pointed at an object and it is still in (MF) manual mode, the camera will not attempt to focus - see P36 and P73-80 of your manual.
Very interesting information about the encryption - although not sure what it has to do with this issue.
If the issue is not connected to the lens, as I queried above, then I still suggest the OP following the process for support. The challenge lies if the camera was grey market or from overseas off the web, which will complicate things. We have no information on that as yet, so awaiting clarification.