As you can see - small amounts are transferred without problems, as they are not suspicious. As soon as the amount exceeds, say, USD 100.0- they start checking if the transaction is fraud or not. I think so, this is just my opinion. However, small advice - don't transfer large amounts, otherwise you will be checked. I understand that the most users are interested in discounts, therefore they prefer to pay yearly of half-yearly or quarterly rather than monthly.
On the other hand, why are people afraid of such checking? If your card is legal and you are you, the card was not stollen, why some users are afraid to pass through the verification process? As you see, it takes MINUTES. Also, to use our service is also not so legal. Why then others are afraid to pay and be verified?
Please don't tell me about privacy etc etc. What kind of privacy can one talk about? We are not government, not police or other legal service requiring authentication. When you go to the bank, sure that the bank officers will require your ID. Why then you are afraid to scan and send them required information? Are you afraid of hacking? On such level? Or you are afraid of transfer of this information to higher authorities?
My final decision is - if you don't trust US, don't trust the payment systems we use, DON'T USE OUR SERVICE! That's all I want to say to those users who is still afraid of something and do not trust our service.
Danishface, thank you for your detailed description and feedback. I think, the users who still are doubt - will take their decisions.