Yesterday, someone tried to join the membership and got an error when clicking on the Paypal button. I tested and whatever platform or browser is used, the error is the same. It does not happen with a Buy Now button, but for a membership only. I tried on a page using Elementor as page builder, and on a page using the classic wp editor, with the same result.
I tried reinstalling s2M and s2M pro. Same result.
Here is the error I am getting:
Fatal error: Illegal length modifier specified ‘f’ in s[np]printf call in /home/creat419/public_html/scrapbookcampus.com/wp-content/plugins/s2member/src/includes/classes/utils-cur.inc.php on line 18
The pages you can check are these:
https://scrapbookcampus.com/creative-scrap/diamond/ (this is using Elementor)
https://scrapbookcampus.com/creative-scrap/diamond-3/ (this is using WP editor)
https://scrapbookcampus.com/master-classes/further-vectors/ (this page has a Buy Now button, not for a membership)
I am not sure if it has anything to do with the pro-form vs button though.