I'm having trouble logging in to the OneDay website https://www.oneday.com.vn/ on Opera Mini (version 70.0.2254.66376) on my Samsung S20 FE. The problem only occurs when Data Saving Mode (Automatic) is enabled. All other parts of the website seem to work fine. After entering my login information, the login page loads, but it gets stuck on a generic loading screen.
I'm wondering if anyone has any technical ideas about what might be causing this issue. Specifically, are there any headers or JSON formats related to the login APIs that I can adjust to fix the problem? Any help would be much appreciated!