FTP upload issues

Hi and welcome to the forum! You’re not the only one to experience this; Admin yesterday told iFastNet to fix it and to install the renewed certificate on the FTP server, but since they still didn’t do that, you’ll have to click on “OK” each time you connect to the FTP server to accept the connection. Also, for that strange error during login, can you please enable full FTP logs, copy them and share them here?