tried it with 2 other cards but always the same error: Error updating auto reload plan Failed to purchase credits: Invalid payment details

when you enter the card data, make sure you press the ✅ icon to the right of the card number (it's grey, and not intuitive) 99% sure that it would fix the problem for ya https://cdn.discordapp.com/attachments/1405495491919216640/1405568021698969680/image.png?ex=689f4cba&is=689dfb3a&hm=7866e181dc8f7cca93b92dc4b4000cee55d52b7d5f7aee3bde617294904e4bf0&

Checking if this is resolved/solved for you?