There are many possible reasons for a credit card not being accepted:
For both physical products and software, sales tax will be calculated dependent upon your billing and/or shipping address.
You cannot change your shipping address after you submit your order. Orders with physical shipments are immediately sent to the Acer fulfillment facility when they are submitted and the system can no longer retrieve or change them. If your shipment is not successfully delivered it will be returned to the fulfillment warehouse and a credit will be made to your account.
It may take 1-2 business days to process an order. If you have an account set up with Acer Store, you can look up your order and see the shipping status from your account.
You will receive a confirmation email with shipping tracking number included.
Also, you can visit Acer Official Website to get more helps, faqs and knowledge base.
Acer America Corporation founded in 1976, today Acer is one of the world’s top ICT companies and has a presence in over 160 countries. As Acer looks into the future, it is focused on enabling a world where hardware, software and services will infuse with one another to open up new possibilities for consumers and businesses alike. From service-oriented technologies to the Internet of Things to gaming and virtual reality, Acer’s 7,000+ employees are dedicated to the research, design, marketing, sale, and support of products and solutions that break barriers between people and technology.