Your questions about SoFi Hong Kong are answered here

To ensure these products are suitable for you, you must first complete a Virtual Asset Knowledge Assessment. Here are the steps to enable trading in the SoFi Hong Kong app:

1. Go to the Settings page.
2. Select Enable Crypto ETF.
3. Complete and pass the Virtual Asset Knowledge Assessment.

Once you have successfully passed the Assessment, you will be able to trade Crypto ETF.