We tried to change our address many ways. Firstly, we did it online and it never changed. I called them as they still had the same address, I then changed again (It has been a month since I changed it online). Even though I changed it on the phone, it was not updated on ecas until a long time. I also sent them a copy of our current lease just in case. You are better off calling them. I also received mail from them on my old address... you don't want that to happen.