Jord Sorry if my wording was confusing. Let's try again, I'll try to be more specific:
1) Credit card payments on bunq.me pages and for payment requests should work fine and I haven't recently seen reports of them failing more than usual. My recommendation here would be to contact Private Support and see if they have more info, as not all bug reporting is public here on the forums.
2) Regardless of whether card payments work fine or not, if you look into the bunq Terms of Service at chapter 19, you'll find the following:
Card payments via payment requests and bunq.me are intended for personal use only, please refrain from using this type of payment for business transactions.
I just wanted to make you aware of this because in your original post it sounded like you might be trying to use card payments for business purposes.