> For the complete documentation index, see [llms.txt](https://cryptoief.gitbook.io/us/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cryptoief.gitbook.io/us/crypto-sign-in-issues-or-email-chat.md).

# crypto sign in issues | email chat

<img src="/files/pdswIN3YMyeOh1x4IDwL" alt="" class="gitbook-drawing">

When you log in, you'll be prompted to enter a unique one-time code sent to your registered email or mobile device, ensuring that only you can access your account. …