Thanks Lisa it seems the most logical reason.

All you others, pro series has offered this service for the last several years and my clients seem to love it.It worked well!! Many are elderly and like the worry free schedule of payments sans mailing in checks and vouchers. It is a service and if my clients don't want to do it I don't force it it is optional!!! 

I realize especially this tax season it is 1 more thing that can go wrong - MURHYS LAW!!! However I would have thought the IRS would have now acknowledged it as a problem.

Thanks for all the responses