Hi Jorge,
We appreciate the update. We are sorry for any inconvenience caused by the issue.
From your description, I found that we have received some customers reported similar issues before. Based on my experience, the issue may be cannot be resolved from the client side. Therefore, I recommend you contact our EOP support to get more efficient support. They specialize in that information. Thanks for your understanding. About how contact the EOP support, you can refer to the link below: http://technet.microsoft.com/en-us/library/jj723132(v=exchg.150).aspx
Best Regards,
Anna Shi