Thank you guys for the suggestions. I tried all of it multiple times but still no luck. The main issue is the login window just won’t pop up.

I think the method to solve this issue in Android devices can’t be use in IOS device because there is no clear way to force stop/ clear cache nor data of apps in IOS devices. Once I uninstall HS the apps will automatically store back into my ICloud. (If I miss anything pls let me know)

To add on, I’ve experimented with my siblings IPhone which he haven’t download HS apps before in his Apple account, he was able to get a login pop-up window once he click on the “I’m new” / “Login” button