Mobile app won't start. Anyone running the mobile app on an Oppo F11?

The mobile app won't start on my wife's Oppo F11 Pro. It just sits at the flash screen. Have tried all the normal approaches of deleting cache, data, and reinstalling. No joy.

Same problem here, Oppo A9 2020. Sits at the flash screen for ever. Must be an Oppo thing then? Anyone have any ideas how to solve it? This phone is my daily driver now, and not having app support is getting a bit frustrating...

Seems like no one in support is at all interested in hundreds of thousands of people in Asia not being able to access their app....