Hello. The first thing I'd do is pull the trim work off from around the shifter and look for a linkage cable. It may have come loose. It's what actually shifts the transmission from Park to Drive, Reverse, Etc. If it's loose, you'll have to do some trials and error to get it figured out and adjusted correctly but it should be doable in your own driveway with just a few simple tools.
I am attaching the info from the manual below that will help with performing this task.
Please run through this material and let us know what you find. Thanks
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Sunday, August 29th, 2021 AT 4:32 AM