How are you at reading PHP code? You could dig through the theme’s source code to find out where the headings are created and modify accordingly. A full text recursive file search utility like Linux’s grep
can help narrow down where to look. IIRC, findstr
is the Windows equivalent.
Note that publicly posting a commercial theme’s source code is likely a violation of their copyright and terms of service. It’s part of why getting commercial theme help in a general public forum is difficult. If you’re not that good with PHP, you could hire professional help.
Why are the tags objectionable? If it’s only appearance, they can be restyled with CSS. It’s often possible to target specific elements if you don’t want all H3 and H5 tags restyled. If your objection is inappropriate semantic markup, altering the HTML is your only recourse.