No shipping method choice

I installed the bpost plugin succelfully. Also the API connection was no problem. I have setup 3 shipping methods in “Shipping Manager” (bpack 24h Pro, bpack@bpost and bpack 24/7, no International shipping), but in the cart/basket page of WooCommerce (version 2.6.6), there is only one option available (bpost vanaf: € 4,50), no other choices.

When selecting “Bereken Verzendkosten” (calculate shippingcosts), no other shipping methods are available. Only a dropdown box to choose the Country from (only Belgium) and a test field for postal code.

What do I need to do to get the different shipping methods available to my customers?