Hi,
5b) Adding this is not working:
{descriptionfield}<br><br>
<p>Categories: {__tax_category}</p><br>
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It looks like this but do not show any differences: https://imgur.com/a/87U3rCY
6) The radio button thing: I really do not understand where and how to do this. Can you send me a screenshot what needs to be done? I will write the CSS by myself then. Its just about getting the right functionality.