Mobile showing desktop site

Hi there,
Can you try for plugin conflicts first https://www.cssigniter.com/kb/checking-for-plugin-conflicts/?
Have you made any code changes than might cause this issue (remove parts of CSS from style.css for example?)

Hi Fotis! I have disabled all the plugins but it has not resolved the issue.

I haven’t made any changes to style.css except to replace the color codes.

Hi there,
Can you please disable everything and let me know, so I can check it out?
Have you tried reinstalling the theme?

Hi Fotis, everything is disabled right now. Please let me know when I can re-enable them.

Is it possible to reinstall the theme without losing my current customizations?

It seems you have removed this
<meta name="viewport" content="width=device-width, initial-scale=1">
from your header.php. So please add it before
</head>
in your header.php file.
Let me know if you need additional help on this.

Amazing, thanks for solving my problem!

That’s great. Glad I could help. If you need additional help with anything, feel free to get in touch and I will be there for you within 24 hours.

Also, we’d really appreciate if you could you take a minute and rate our theme/plugin at https://www.ads-software.com/support/view/theme-reviews/olsen-light. In order to provide a rating, you will need a www.ads-software.com account and it takes only a minute to create one by following this link https://login.www.ads-software.com/register