Since the evening of March 20 ONUS users have reported difficulties logging in. The application repeatedly displays an error message prompting users to check their network connection and login credentials.

Thinh, a Ho Chi Minh City resident who has used the platform for over two years, initially suspected he had simply entered the wrong password. After multiple failed attempts and unsuccessful password resets, his concern grew. “I have VND200 million (US$7,600) worth of tokens on this platform, and so I’m really worried,” he says.

Attempts to solve the issue by registering new accounts have also failed. New registrants got stuck after entering their passwords, with some facing indefinite delays when waiting for OTP verification codes.