Hello, sorry I was a little wrong in my previous response. Some social media may not preview the website due to the security system I mentioned earlier. however, social media bots that support JavaScript should not encounter this problem. but, there is a workaround. If you use cloudflare, some security features won’t work. Since you have a custom domain, you can set up cloudflare with this guide:
After that you can setup og (opengraph) tags with wordpress, here is a guide that may help: