From Binance’s Disable account page:
Disabling your account will cause the following:
- All trading capacities and login for your account will be disabled.
- All API keys for your account will be deleted.
- All devices for your account will be deleted.
- All pending withdrawals will be canceled.
- All open orders will be canceled.
- Your verified information will not be deleted.
If you deactivated your account for security reasons, you need to contact Binance support to reactivate your account.
NOTE: always make sure you’re on the official Binance website. Watch out for scammers.