What is the ruling on working as a distributor of prepaid cards used on online dating and marriage websites, knowing that the nature of the work involves recording personal data and bank accounts, and that there is a divergence in customer opinions regarding the credibility and seriousness of these websites?

Secondly: It is not advisable to sell entry cards to marriage websites due to their frequent use for pleasure, amusement, and viewing women's pictures, and for the fraud and deception that may occur, as you mentioned in your question.

Thirdly: It is permissible to sell to a specific person if you know of their seriousness in searching for a wife, while informing them of the unreliability of some of these sites and the necessity of warning them about fraudulent sites if you are aware of them. Nevertheless, this type of matchmaking and marriage is generally not encouraged.

Fourthly: It is permissible to sell prepaid cards for online purchases in general. The responsibility for their use in unlawful ways lies with the buyer, unless you know or strongly believe that the buyer will use them for unlawful purposes, in which case selling to them is impermissible. It is assumed that you generally cannot know this when selling online.