i have a hard time explaining this but if all you have in the htxl export field filled in is a / then it uploads the files to whatever directory is default for that ftp accout.
if i were one to use the games ftp feature to upload the reports for my league it would simply be
/output
since output is a folder in that ftp accouts root dir. it is all i need to put.
god i hope i made sense and didn't confuse you more
it's faster (by a whole bunch) to zip the file you generate the reports to, upload them via ftp or the webhost accout's file manager (if it has one) and then unzipped it again on the server