So I have ordered SIMYO Belgium SIM directly. For persons with no Belgian ID it works this way. First to email to
foreigner@simyo.be that you are foreigner and you like to purchase the SIM card from them. They will email you back application form to fill plus ask you to send them copy of your passport plus form. You can send it by snail mail, fax or email. I did it by email. They created account for me. And from them you can order as many SIMs as you like. They let you choose you phone number, but the list is not good. Price for SIM is Euro 10 postage included. The same price for Belgians as well as foreigners. Airtime is on top of it.