Formbuilder: older version not compatible with pw 3.0.148?

[joe_ma]

I've purchased a dev (0.2.4) version of formbuilder some years ago. Now I tried to use it with the new pw 3.0.148 version and it doesn't seem to work. The form is not visible, neither when clicking on the "Preview" tab nor on the page it is embedded on.

The source code of the page has only an empty iframe.

Is this version I have got not compatible to the new pw version?

[joe_ma]

Ah, I just found the solution: the template of the older version has no namespace. After defining a namespace, the form works fine.