I have just solved my problem. It was setting the expire date to “session” and that was the problem.
I have defined a Expire date and it started working perfectly.
The code is in file spca-font.php in line 53.
It was:
document.cookie=’wpca_ok=1; path=/’;
Changed to:
document.cookie=’wpca_ok=1; path=/; expires=Wednesday, 01-Aug-2040 08:00:00 GMT’;
This is not the correct way but the author can use the code