If you are blocked from entering your site, you can whitelist your IP addresses through your WordPress.com account. Just visit https://wordpress.com and log in using the same account you used to connect Jetpack to your site, and go to My Sites?→ Settings →?Security?→?Whitelist. From there you can enter your IP address or addresses and whitelist them from your site.
If for some reason that doesn’t work, you can also try the 3rd method detailed here:
https://jetpack.me/support/security-features/#unblock
You’ll need to access your site via FTP. If you haven’t used FTP before, your host should be able to help you get setup with an account. Then, you can follow these steps:
1. Connect to your site via FTP.
2. Download your wp-config.php file.
3. Make a copy of the wp-config.php as a backup.
4. Open up wp-config.php in a text editor, and add the following line:
define(‘JETPACK_IP_ADDRESS_OK’, ‘X.X.X.X’);
* Please note, you’ll need to replace the X.X.X.X with your real IP address. You can use a site like https://www.whatismyip.com to determine that.
5. Save the wp-config.php file.
6. Upload the modified wp-config.php file via FTP, replacing the existing one.
After following those steps, you will be able to log back into your site.
I hope this helps.
