Creating database with the Common Data Service is failing in some of the scenarios. We are fixing this problem with high priority. Apologies for inconvenience caused. You can continue using your current databases without any issues.
We had an issue with SharePoint forms customized with PowerApps not loading from 13th April 2018 to 16th April 2018. We fixed this issue on 16th April 2018 at 7pm Pacific Time, please publish your forms again from PowerApps if you continue to see the issue.