I can't get TeamViewer to work

I'm trying to get TeamViewer to work between my 2017 MacBook Air and my Nokia Lumia 925 but it just keeps saying, on my Lumia, that "TeamViewer is outdated and can update if you press OK" or something like that, I can't remember. When you press OK, the dialog box goes away but nothing happens. I get that this is a Lumia and no one is really using them anymore, but seriously, if the app doesn't even function how it should do, just remove it from the store altogether since it's so misleading and has made me create an account and waste my space on something that doesn't even work.