Hi wolfart,
That page does seem broken. I have used a few [formdata] options and have found a few threads where they are discussed.
Basically: [formdata form-1]
i.e: [formdata (slug)]
To show only some columns: [formdata form-1 table show="foo,bar,blah"]
From two years ago ( https://goo.gl/BYjftB ):
Version 1.4.16 lets you display the submitted data with the ‘formdata’ shortcode. I will be putting an article in the FAQ, but basically it works as follows:
[formdata (form slug)]
You can also add options, like if you want to show 10 items per page, do:
[formdata (form slug) dataperpage=10]
Or, if you want to sort the results by something other than the timestamp, for example by an item with the nickname ‘item-1’:
[formdata (form slug) orderby="item-1"]
You can also make the list sorted in ascending, rather than descending order:
[formdata (form slug) order=ASC]
If you have a particular template you would like to use, other than the default summary, and the template’s filename is ‘my-custom-template.php’:
[formdata (form slug) template='my-custom-template']
Of course, you use as many of the above options as you want:
[formdata (form slug) dataperpage=10 orderby="text-1" order=ASC template="my-custom-template"]
Hopefully that explains it.