Having bad experience with Obi202. Working fine for about a month. Now I am getting "Check Tel Line" on cordless phone. My Ooma business phone works fine. Obi202 solid green lines on 4 lights. Plugged obi directly into modem (was plugged into Ooma). Still nothing. Turned of Obi and phone. I have been out since May 11th and still no solution from Obi. Bought it in late March. Should I just return to Amazon?