@Marouène0 Did you try again after you talked with your bank? The reason I asked is because my bank declined a credit card transaction for purchasing train tickets since they felt it was a suspect transaction...I don't travel often! Also, did you check to see what kind of payment options for booking on Airbnb are available for your country? If all else fails, contact Airbnb to see what the problem is.
The best and fastest way is through twitter @airbnbhelp. Or, you can read this link:
https://community.airbnb.com/t5/Tips-Tricks/Contact-Airbnb-A-Community-Help-Guide/m-p/16165/highligh...