2 Shipping Options Magento Not Working

I would really need help from you guys. Actually I have installed this Meanbee Shipping in my client website which is under magento open source. And basically I have set for customer to choose 2 shipping option whether by Royal Mail Airsure or Royal Mail 1st Class Small Packet. However, when customer want to set the shipping for their product, only the option for Royal Mail 1st Class Small Packet appear. Therefore, how to fix the bug so that both of the option would be appear on frontend when customer calculate the shipping cost and when customer go through the checkout onepage. Thank you. I really hope that anybody can help me solve this problem. My client perfume website: (Posting URLs with contact details is not allowed in this site as this may result to account suspension by Freelancer.com Administrators)