WD MyCloud will not connect since modem upgraded
We recently increased the speed of our Uverse internet to 75mbp which then included an upgraded modem. Prior to that we had a WD Mycloud hardrive connected to our old modem for about 2 years and never had a probelm connecting to it when at home or away. Ever since the new modem has been installed when I attempt to connect to the cloud it gives me an error message that "remote access has been disabled". I have called Att and Western Digital, the maker of the cloud, but neither have been much help. I'm pretty sure it has to do with 2 specific ports needing to be openend on our new modem but I'm not certain. I never had to open ports when I initailly set up the cloud 2 years ago so why would I have to now? Has anyone else experienced a situation like this and what would be the easiest way to resolve it?
Thank you in advance.