Why can't I edit names, add items and other? Edited

[Puycho_Puychev]

I am using the Trello app.

My board is private, I can add/remove cards, but I can't change the names of the cards or add items to checklists or write comments? When I click on the "Add new item" field on the top of the card menu some text appeares for half a second and then dissappears and I cant write the name.

Why?

[Iain Dooley]

@Puycho_Puychev is this ios, android, mac or windows app?