Cant See The PHP option to enable php code

You did not provide any data so we can’t check:
https://www.ads-software.com/support/topic/ad-inserter-support-forum-before-you-ask-for-help/

However, from the screenshot it looks like PHP processing is disabled for your website:
https://adinserter.pro/documentation/code-editing#php-code

You (or your developer/hosting company) need to remove those PHP constants that prevent PHP processing.

Have you solved the issue?

Yes Thanks ??

Great ??

If you like the plugin I would be grateful if you could write a short review:
https://www.ads-software.com/support/plugin/ad-inserter/reviews/#new-post

Thank you!

I was having the same problem. Updating the wp-config.php file as suggested on https://adinserter.pro/documentation/code-editing#php-code solved it for me. Thanks!