Botton for Line share to timeline is blank via smartphone

Are you facing the same issue when you share via the Line share icon appearing in the popup on clicking the “More” icon at plugin demo page https://super-socializer-wordpress.heateor.com/ ?

Then it seems something related to the language of your website or its encoding. It’s how Line app is picking content from your webpages. You already have Open Graph Meta Tags installed at your website. Can’t do anything about it.