I have downloaded the trial version of the document exchange module and installed in a test site in my domain. When i am trying to work with the trial version it says " The module has not been activated or there is an issue with the license. Check your licenses on your licenses page on www.bring2mind.net. Log in using the account you received when you first bought the product." and not allowing me to upload any file and to test the trial version. Please advise how to resolve this.