Save/open word in IDrive

Hello,

I bought the 365 licensed package and I have a problem: I can not save word files in Idrive and I can not open a word file (which I moved into idrive). It gives me error and I close all other word files open at that moment.

I still had the microsoft office installed, still a license and I had no problem. What should I do?

I have MacBook Pro (Retina, 13-inch, Mid 2014), OSX Yosemite 10.10.5.

Thank you