Board Game Arena

"Vous devez d'abord combiner ou ajouter ♣K"

I am not sure what your problem is here. This translates as "You must meld or add King of Clubs first". If this doesn't solve your problem, please explain more about it.

I have a other exemple : https://drive.google.com/file/d/1qjPqf- ... sp=sharing

I would like to use card with 2.
But i can't because "Vous devez d'abord combiner ou ajouter ♣6".

What is the problem ?

You picked up more than one card from the discard pile. When you do that, you must play the card furthest down in the pile that you picked up first, before you can play any other cards.