I want to be in full support of this add-on, but when reports are generated, many assignments are labeled as turned in late. I have tested on students who have consistently submitted work on time and with students who have a combination of on-time and late submissions to see if the "(Late)" portion changes to indicate those specific assignments were submitted late.
I've had to go back to every report and manually erase every "(Late)" that does not apply. This is supposed to be a convenient way to present their grade report in a clean way, but automatically and incorrectly applying "(Late)" to every assignment is slowing the entire process.
Also, when choosing the import dates, make sure to set the start date 1 day before the start date you actually want included in the report, otherwise it will generate starting the day after.