You likely can't run multiple devices off the same account. The call wouldn't know which way to go. But if you have two distinct accounts then no problem. Something to try is to see if you can make the account work from a softphone on a pc. xlite or some other standards based SIP application (not gizmo, skype or other like that). If xlite works without issue then something is goofy with the diablo app but so far mine works the same as it did under chinook.