Items disappeared from the tab

5 minutes ago I bought an upgrade of a regular chest to a premium one, 2 pieces at a discount. I had amulets in the regular tab and the tab name was Amulets, after upgrading the tab to Premium. All the amulets disappeared, there are no amulets tabs, the premium tab appeared but there were no amulets inside. There were a lot of them there, good bases for upgrading