I can't put items into any of my shops either from my inventory or from the shop directly. If I click on "Move to shop" from my inventory, if doesn't list any of my shops. And there's no "Quick stock" option in any of my shops. help!

The shops were revamped on April 17th, this thread explains the change and how to get new shops.

I'm guessing you haven't made any new shops yet. You won't be able to add any more items to your old shop or adjust the prices of anything in there.

thanks!