Sign in at my.zentrader.com with the email address on your account, which is your username, and your password. If that isn't working, the message on the sign-in page tells you which of the situations below you're in.
Incorrect password
Check that Caps Lock is off and that your browser or password manager hasn't filled in an old password. If you're not sure of the password, reset it: it takes a couple of minutes. See How to reset your password. Note that changing your password signs you out on every device you'd asked us to remember, so if your phone suddenly asked you to sign in again after a reset, that's why.
The email address isn't recognised
Make sure you're using the address you registered with, spelt exactly as you entered it. If you have more than one address, try the others. If you've lost access to that mailbox or can't remember which address you used, contact us through the chat and we'll help you identify the account.
Your email address isn't confirmed yet
A new account can't be used until the address is confirmed. Trying to sign in with an unconfirmed address sends you a fresh confirmation link, so check your inbox and spam folder, confirm, then sign in. See The confirmation email didn't arrive.
Your account is closed
If your account was closed, at your request or by us, the sign-in page will tell you. To trade again, contact us and we'll reopen it where we can. Please don't register a new account instead: a second application is rejected automatically. If your application was declined after the identity check, see Why was my application rejected?
Nothing happens, or the page keeps reloading
This is usually the browser rather than the account. Try a private or incognito window, clear your browser's cache and cookies, or use a different browser. If you opened Zentrader from a link inside LINE or another app, open it in Safari or Chrome instead. Check the date and time on your device are set automatically, as a wrong clock can break sign-in.
Still stuck?
Contact us through the chat and tell us the email address on your account and what the sign-in page says. We'll never ask for your password, so if anyone does, it isn't us.
Related: How to reset your password · The confirmation email didn't arrive · How do I reactivate my Zentrader trading account? · Why was my application rejected? · Is there a Zentrader app?