In SM88, sign-in issues are usually caused by small typing or environment problems. Start with basics: confirm keyboard language, check Caps Lock, and retype the password slowly. Then confirm your connection is stable and refresh only once.
- Stop after 2 failed attempts and wait a short moment.
- Try the same device and avoid switching Wi-Fi/mobile data mid-login.
- If the page looks stuck, restart the app/browser and try one clean attempt.
If the error repeats, follow the step-by-step checks on Login.