I bought two 50S units two years ago, and they have worked fine for two years. Two weeks ago, they started acting up. Now, when I turn them on and press the mesh intercom button, rather than it saying "Mesh intercom on....channel 1", it says "phone pairing". and the only way to resolve it is to hold the phone button for ten seconds, then press the jog button, then the mesh button again, and the problem is resolved until the unit is turned off. Then it starts all over again. I paid nearly $600 for these two units, and I'm ready to throw them away if this cannot be fixed. Can anyone advise me as to what is causing this issue?