My guess is that you are on a different account than the one you used to buy the game. If you're not getting a new password, it's probably sending it to a different email address. Try any other email addresses that you have and see if you can find your game listed in one of those.
Once you figure it out, you can use these instructions to transfer to your new main account. https://help.ea.com/en-us/help/account/accidental-second-ea-account/
Good luck!
@larsdecoster wrote:It doesn't works here too... It works op a Windows-computer, but not on my mac...
This is not the same problem, unless you can't get SimCity to show up in Origin on your Mac. If that's the case, the answer is the same; log in to the correct Origin account and you will see SimCity under "My Games". Make sure you haven't accidentally hidden SimCity in the list - Click the "Filter" button in the upper right-hand corner, and choose "Clear All Filters" to see all of your purchased games.
If you can see SimCity, but it doesn't run correctly on a Mac, there is an issue the High Sierra update. There is a long post here about users experiencing the same issues. This post from @EA_Mage says they are working on it, but it's been quite a while since that was posted. If you read through all the posts, there are a few other suggestions, all with limited success (lower settings to low/minimum resolution, turn off automatic graphics switching, run in virtual machine, increase memory, use external monitor, use gfxCardStatus utility to force use of non-Intel GPU) but basically EA is "working on it" and no estimate on when it will be fixed.
Please add your details and subscribe to the Simcity Crash OSX 10.13 thread Hopefully, there will be some word from them.
