"What build of Sync 3.4 do you have? If anything less than 3.4 build 23188, then update it and see if your issues are resolved. The problems you are describing are typical on build 22251."
Yes, indeed, I had 22251. I had set the auto update feature, but it shut off when powered down, so it did not update on its own. It also lost my Wi-Fi connection. Today, given your advice, I babysat the unit with the vehicle on accessory. It downloaded and installed 23188. Took about an hour and a half. I have only tried a couple of features, but they are working fine. Whomever was in charge of 22251 ought to have an unpaid vacation and a mandatory testing review. BTW, I have not looked, but is there a way to download updates via some Ford website to a USB and then update from that source? Just a curiosity.