Hi, your very specific instructions would *seem* to be exactly what I needed. However, on my Data Usage menu, there is no "Auto Sync" entry. I have only Restrict background data, Hide Wi-Fi usage, Mobile hotspots, Mobile networks, Show units, and Help.
Then under Settings > Accounts > Google > [e-mail address], it says "Sync error", and at the bottom of the screen listing my e-mail accounts, along with Search, Location settings, and Google Fit, it says "Sync is currently experiencing problems. It will be back shortly." However, it's said that for at least weeks if not months. And when i select the specific e-mail address that i want to sync, it lists 15 different services that are synced, but Calendar is not among them. And that is the one problem that got me searching for help in the first place.
When i go under Settings > Accounts and look at my other accounts besides Google (e.g. Facebook, PayPal) - some of them have been synced recently, while many of the others say either "sync is turned off" or "Sync error" with the "Sync is currently experiencing problems" message at the bottom. Grrr.
I would sure appreciate any further help on this matter! Oh, and i suspect this actually matters: I'm using a Galaxy S5 on Verizon with Android Version 5.0. The Galaxy S5 in particular seems to have been experiencing severe problems ever since the lollipop update.
...dave