Theme patch file is necessary for your theme if you have created the archive and single post layout using Blog Designer PRO plugin.
Using this them patch you can set up your archive and single post page layout with your theme’s page layout.
In the latest version of Blog Designer PRO plugin. it displays that your them has contained a theme patch or not. To find please click on Getting started Menu from Blog Designer plugin menu. Click on System Status menu option and go to the bottom of the page where you can find Template Status section. In this section, you can check that Blog Designer PRO theme patch applied or not!
Theme patch is not applied…!
Theme patch is applied…!
Theme patch applied but it’s outdated…!
Still you not get the solution for your query? open a support ticket.