Used for years with iPhone 6, suddenly "incompatible"

I used/ loved this dock (model DS7550/17) with my iPhone 4s, iPhone 5 (with adapter) and iPhone 6 (with adapter). Suddenly today I was not able to get any sound from the speaker while connected...research shows that this dock is compatible with the iPhone 4 ONLY...was working fine until today! I wont be purchasing another dock from Philips.

L34nn4 about Philips DockStudio, v3.0.2