Code page and microdata

Hello,
I searched and I did not find how to change the language in the search results … Could you tell me where I should act please

https://prnt.sc/dhyksx

I also have errors in “microdata testing tool” in the “BLOG”
Could you also help me correct these errors please

https://prnt.sc/dhykzy

my site

Best regards

• This topic was modified 8 years, 3 months ago by martinjeanclaude.