Plugin needs update

I previously had images added using html in the “add after cart” hook. The images were showing, but then disappeared. I went to change the image (this needed changing anyway).

The img tags work but if I add a src, I get a 403.

eg
<div><img></div>
is ok, but
<div><img src=""></div>
is not

Please how do I use this. I’m stuck

I am using the plugin to insert PHP – but it’s not displaying. Is this possible?