Hello,
I am guessing you are referring to the Print button on the My Account page. I just tested this on our end and it worked well for me. So, this could be a compatibility issue on your site. Can you please check this by temporarily disabling other plugins so that we can know which plugin could be causing a conflict? I also recommend you make sure that you have updated the plugins on your site to the latest versions.
If the problem persists please check if you are getting any errors in the browser console when you click on the Print button. Please share the error message with us if you are getting any errors.
Kind Regards,
Upendra.