1 Best Answer
It might be the easiest thing to do. Unfortunately, we cannot help you with the theme code. 
So you want to recreate you site with your new domain name and then link to the old posts? You can copy the site, but you would have to copy/paste the blog posts as you mentioned since the blog page/posts won't auto copy.
Hi there, my blog posts don't show the facebook like button; i noticed (maybe, not sure) that this happened when i changed my domain from free domain (.weebly) to my own domain (giorgiofranzosipsicologo. com).
By using facebook debugger, it says that i miss "og:type, fb:app_id".
Can you help me fixing it?
Thank You,
Giorgio