If you have peyos covering your ears during prayer, then the “Heavenly Ear” will not hear your tefillos. This is what i read in the cr on another thread. I could be wrong, though.
I could see that if you have your ears covered, that YOU might not hear the “Heavenly Voice” telling you not to talk during davening or some other warning, but to imply that HASHEM kivyachol will not hear YOU at ANY time, much less when YOUR ears are covered, sounds a little off, IMO. Is this in a Gemarah anywhere?