Hi @mkbarraco
Thank you for using Paid Memberships Pro.
There is no easy way to disable this function at this point in time.
The function hideCardNumber is used to scrub the full card details and store only the last 4 digits for reference purposes only. I recommend in keeping this logic if possible, and add it to your privacy policy.
The code may be found here – https://github.com/strangerstudios/paid-memberships-pro/blob/ce267d93c1cbe645978c4c777441238aafbff1d0/includes/functions.php#L738
You may be able to adjust the code here, but it’s not best practice to edit core code in any plugin or WordPress.
The reason this is not filterable is that developer’s can prevent this from happening and store the full credit card numbers.
I hope this helps get you started.