Without ig-platform-id in config.plist, WEG will automatically inject it for you.
About the black screen issue, I think many people have it too. https://www.tonycrapx86.com/threads/bug-black-screen-3-minutes-after-booting-coffeelake-uhd-630.261131/
If you manage to fix color banding, please let me know. Although it doesn't bother me much but I still want to get it fixed.
Follow this guide:
I haven't got my account locked since I used this guide.