When I insert php code between de tags after saving the "hikashop shipping method" the code works fine but it is not visible in the backend.
It only shows {source} {/source}

sourcerer pro 9.5.2
joomla 3.10.11
PHP 8

thanks I will check!

I read the article - even tried the brackets
the problem is different however
It is not that hikashop strips the code - the code works fine after saving

After saving however the entered php code is not visible anymore in the editor nor code view

the only things that remains visible after saving are the tags {source} {/source}