> For the complete documentation index, see [llms.txt](https://hdsd.vdsc.com.vn/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hdsd.vdsc.com.vn/en/faqs-frequently-asked-questions/13.-an-error-appears-authentication-information-is-invalid-please-try-again.-what-should-i-do.md).

# 13. An error appears: " Authentication information is invalid, please try again." What should I do?

You access your phone's settings to check if automatic date and time are enabled. 

(How to check for iOS and Android operating systems: [Instruction link)](https://dangvu.vn/huong-dan-cai-dat-ngay-gio-cho-dien-thoai-android-va-ios)