Assist with error of Authorized adobe Digital Edition for open eBook

Please assist with this problem  i experience during the authirization  to my computer to epen ebook via using Adobe Digital Edition . Before  was uthorized me for idobe id .but now it does not allowed me to re-open it again and it show error getting license, license Server Commucation Problem: E_LIC_AREADY_FULFILLED_BYUSER

please assit urgently

Kindly

regards

Velenkosi Mavundla