@Pinypie94 Where are you getting this message? There's an issue caused by the game trying and failing to connect to EA servers to authenticate installs in macOS, but that normally doesn't have anything to do with installing custom content. If this is what you're seeing:
try this workaround:
If this isn't what's happening, please take a screenshot of the error message, with the game in the background (so I can see what it's trying to do). Hit command-shift-4 and drag your cursor over the part of the screen you want to capture. The screenshot will land on your desktop, and you can attach it to a reply here.
