You need to change it in your PARTNER SETTINGS. If you already have, then send them a message about it.
I don't think we can do something to change it from Partner Settings.
It is set by default from DF.
Even if you change the waiting time in
Free downloads delay method, i think nothing will change for the message
You exceeded your free daily download limit.
Free users can download 1 file per hour or 3 files per day.
The uploader of the file you are trying to download has placed a limit on the amount of free daily downloads. You can either wait for 24 hours and continue your free download or buy a premium account."