@ellatheevil You are able to ply dev cards before rolling the dice.

https://www.catan.com/faqs/93

@Lutzilla Thank you very much for your feedback. That's a very unique issue. Have you tried uninstalling the game and reinstalling it?

@Catiac_ said:

when you zoom out you find a card stack ("?") at the bottom. click on it to draw a card

Mouse wheel didn't zoom for me but it was possible to drag the board up to see the draw pile.

There are some icons below your name with tooltips 'End Turn', 'Buy Development Card', etc., but clicking on them doesn't do anything (using Firefox).

@Cinda On which platform are you playing the game?