Title in Browser Window

Also, when I deactivate All in One SEO, the title is displayed without problem.

Hi Donny,

I checked your site and it looks fine. However, All in One SEO Pack is not writing the Title tag for your site (the text that appears in the browser). Your theme is doing this because your theme is overriding All in One SEO Pack. There are two settings you can try which may fix this –

https://semperplugins.com/documentation/performance-settings/#force-rewrites – Set this to Enabled
https://semperplugins.com/documentation/general-settings/#use-original-title – Set this to Disabled

If these don’t work then contact your theme developer and ask them how to disable their SEO and why they are using Output Buffering.