Your order could be in pending status due the fact that payment system refected this transaction.
There could be several reasons for such action from the system:
- You do not have sufficient funds on your credit card\ bank account;
- Payment system determines your credit card as high risk with fraud;
- Due bad internet connection payment system did not confirmed transaction.
The first reason is most common, and you simply need to check your balance.
In second case we recommend to change the card or way of payment for successful transaction.
In third case you should contact with website's administration and provide statement from the bank account where billing is noted.