Problem with SP Client Project & Document Manager

Hi!

In the web site

http://www.qubosrl.it/area_riservata/home

I install the plugin free version “SP Client Project & Document Manager”.

The only problem is that I upload the file and thus is correct but if I refresh the page the last file iuploaded uploads again and with error (if I tried to download it does not work).
I would like to evoid the further uploading after page refresh.

WordPress access:
utente: andweb
password: CcndaQiCDZ

Thank you so much!

Martina

https://wordpress.org/plugins/sp-client-document-manager/