I cant sacrifice items . And some stuff on mobile what browser best to play and WHY no app. Thanks

When you grab an item, can you see it or it instantly grab it to your inventory? If it's the case just log off and reconnect, I have sometime this bug on phone.

Other point is your shrine item if you are already full in life & mana, in that case select and click to trash in your inventory (bottom right)

Thx I managed to put items on Marketplace.