I prolonged the licences and installed you add-on on a multisite network. But as long as I try to set up the Pro2PDF on one of sub sites I get the following warnings:
You can generate only 1 PDF form because your server has to have pdftk installed for PDF generation. Please install it. Alternatively, you can activate Formidable PRO2PDF if you want to use more forms.
You are using a free version of the plugin. To unlock additional functions (no need of installing pdftk, pretty field selection and many others), please activate Formidable PRO2PDF.
There is no option to activate the form on any of sub sites directly and there is no any opportunity to activate a form from sub site from the main one.
For multisite installs, each sub-site must activate the plugin and the network plugin must be deactivated. With this configuration the Activated Forms tab should only show the sub-site’s forms, not all forms.