If you opened the download link in your browser and you saw this text (or something similar to this text):
File is temporarily unavailable, please try again later. Maintenance in data center.
please don't send a request to re-upload! Try to download this file again later.
But if you opened the download link in your browser and you saw this text:
File not found
then you can send a request to re-upload.
We hope that this problem will be solved in the near future.