its not possible to load two forms on a page UNLESS you load one one a module and the other with the plugin via iframe, to get the module in the same article you can use modules anywhere from nonumbers in the JED
I explained above how to do it you must load one regularly )using the plugin) and the other loaded using the module (but it must be in iframe mode) and then in order to make the model appear anywhere on the page use Nonumbers modules anywhere from the jed to accomplsih this
Now it should be working with multiple forms as described above using module in iframe.
Seems like I am spending more time fixing your component than using it, i would consider doing otherwise for next projects.
First if was proud that you are from the same city of cologne as me, but now it looks like your quality standards are not really german You should spend more time working on the code, or release it to open source...