Facebook Thumbnail

Hello,

Recently I wanted to publish my new blog post on Facebook, but I have realized that there is no thumbnail, there was no problem before, so I thought about the Facebook debugger, there was no luck, so I started to dig a bit further, at the same time I have realized that there is no image with the home page as well … but it was working previously, after installing a plugin ”Open Graph and Twitter Card Tags” It started to work for the home page.. but for any other page it’s not working. I tried to delete cache, but didn’t work.. no clue what to do next, could anyone help, please.

thanks in advance,
Daniel.

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