the issue should be resolved within few hours, please note that if simplex rejected your transaction because of your card, it might be strongly possible that your card's issued country is not supported by simplex (our credit card processor)
Thanks alot nakitcoin for the great reply, I noticed the problem was from my end while the card had some issue from local bank, it's taking some time for the issue to be resolved by the customer care services.
Also I search for referral link in your web site I couldn't find it, do you have any plan to include that in the future,? I have some friends that need to trade in your website, if there's no referral link, there's is problem either.
We at the moment do not have any affiliate program, but this is something that we are considering to implement soon... We would like first offer a wider range of currency wich is our priority, prior allowing some devellopment time for this feature.