Online Credit Purchases Step 1. Register as a member. (Please proceed to the next step if you have already registered.) Sign Up Step 2. Sign in, go to the Member Center, and click 'Buy Now' to make an online payment. Member Center Step 3. Go to the TWSC Service User Portal, select a project, and instantly activate AIHPC high-performance computing as a service and secure, reliable IaaS services. User Portal For more payment options, feel free to contact us. Contact Us