Hi drengerovrobber,
I am not with Laminar Research; just a flight simmer.
Who or what is g2a? I sometimes have problems in identifying TLAs (three letter acronyms).
What version of X-Plane do you have? If it is a disc version there is no key/code but you have to run the software with disc 1 inserted into the DVD drive at all times. This the only way the software will function. Read the manual.
If you have a Steam version digital download then a key should have been provided by the seller of the software. The Steam version is a hybrid of the genuine X-Plane Laminar Research (LR) digital download version.
Seems you have a version supplied by a third party (g2a) Contact them to solve your problem
However, if you have by chance purchased a genuine digital download version from Laminar Research then you need to contact them starting at [email protected] In doing so you need to provide details of date of purchase, receipt number, method of payment etc
Glenn