Immobilizer key - most modern keys have a tag in them similar to the tags used in stores to prevent theft. When that key is put in the ignition the vehicle's security system reads that tag and compares it to the ones it has stored in memory. If they match the key will work, if not the engine might turn over but the security system turns off the fuel and ignition, so the engine won't run.
A bi-Directional scanner is a tool that can read trouble codes but can also communicate with the modules in the vehicle to test or activate them or to allow access to do things like program keys or erase keys. That is likely what they did to make your key not work. Unless you are planning on doing work on multiple vehicles these are not something you buy just to do a few keys as they are very expensive and can be "fussy" when it comes to keys.
If the local locksmiths can't (or won't) program in your existing key, you are left to find someone else who can and will. That would be a dealer or some of the small shops or mobile mechanics who offer those services. You should be able to find a local one by looking online. Especially if you are near any larger metropolitan center.
Monday, February 12th, 2024 AT 8:34 PM