Scrivener update

I bought Scrivener a few years ago…after a bout of illness, went to use and learn it, and it says it can’t be supported by my now updated Mac system (MacOS Mojave) and I must contact appropriate channels to update Scrivener. I have no idea what that means or how to do it. I am self taught on the computer and not terribly computer literate- but I do learn. I found this site by looking in About Scrivener on my Mac. Is there any way I can be helped about what to do so I can get busy writing?
Thank you,

You probably have Scrivener 2, which is a 32-bit application. (That’s what the warning is about.) For Mojave support, you need Scrivener 3.

More information here: … crivener-3