Can't login with FTP users
We're trying to build a VPS on Debian 6, Apache2 with ISPConfig 3. Until yesterday we can login with our ftp user on our server with FTP clients. But I don't know how we can't login right now. FTP client gives 530 Login incorrect error.
Yesterday we set up Webmin on our server. We identified our domains on Apache and edited Suhosin configuration because of our forum software IPB wanted that.
After these configuration we can't log into FTP. We try to make a new user in Ispconfig 3, tried different FTP clients but it didn't work.
SSH working fine but FTP isn't working. What should we do right now? How can we solve that problem? Could you help please.