This is going to be a pivotal point in the transaction. Send them a support message well before signing up for a plan, and ask them if they still offer those vouchers. Site is available in 37 regional languages as per convenience. You should check Fiverr.
If you still want to buy Facebook Ads Coupons then you should check Fiverr.
You should check Fiverr. Please refer the official Facebook Coupons guideline and terms to get more ideas and information on that. Manage your Facebook Page.