I had a different issue with aliexpress. I placed my order a couple days ago, fiio modified the price on my order on friday evening and I paid on friday evening. The credit card I used, which I know is fine and works without a problem was rejected for what aliexpress called security reasons as a result aliexpress cancelled the order.
I had to place the order again on Satuday, wait for fiio to adjust the price again (which they did this morning) and now I waiting for the payment to go through completely. I used a different card this time and so far no rejections. They say on their site it could take up to 24 hours to verify payment.
If this one doesn't go through I doubt I will try a 3rd time.