Did you see this black/white screen? when opening the HappyToo App today? Not a problem! The solution is here :D
This issue has only occurred with I-phone users. What you need to do is (1) Delete / Reinstall the App (2) Update the app to the latest version via https://happytoo.app Or Search 'HappyToo' on the App store.
Once you complete reinstalling it, you should be able to use HappyToo service again :D
We really apologize for this inconvenience. Our technical team will fix it as soon as possible.
HappyToo Customer Support Team