I seem to be having an issue uploading my data into this module.
The module is set to month, yet when I try to set the import period, it is in weeks:
Separator can be any non-alphanumeric character
Y represents year number (1, 2 or 4 digits)
W represents week number in year
Further, entering a custom format of YY?MMM to match the .csv header, or any variation there of, produces this error: "The custom format is not valid for this import"... what is going on here?