Seeking help in fixing ‘Archive issue’ in That music theme

Hi,

I recently encountered a problem with the ‘archive’ page on my website: yomonica.com . Somehow it only registers last 10 posts when you click on the archive for the month (say October). Even though the post for the month are more than 10 it displays only 10 posts. I was unable to spot the code where I could make the change. Kindly advise.

I appreciate it.

Thank you