FTP access & redirect
The most common error is to copy and paste the data without taking care of the spaces at the end, that invalid the login.
The FTP access data have to be generated from the Plesk control panel, in the "FTP Access" area.
The data to insert in Plesk are:
The website must be upload in the "Httpdocs" folder.
The system folders "cgi-bin, error_docs, httpdocs and logs" mustn't be deleted.
If you have uploaded all in the root, move it in the "httpdocs" folder. If you deleted that folder, re-create it and move the files there.
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