It is possible that the directory that you have permissions to may have been renamed or deleted.
To fix this issue, please login to your 123-reg control panel and reconfigure the additional FTP account by doing the following:
2
Scroll down to the Web Hosting section, select the relevant domain name from the drop-down box and click on the Manage button.
3
Click on the Manage FTP accounts option.
4
Click on the pencil icon under the Edit column for the relevant FTP account.
5
Make any changes required and click on the “Save Changes” button.
Please Note: It may take up to 20 minutes for your additional FTP account to be ready for use.