Content is not created even it’s fetched

I tried the premium support, because I have a valid key, but error-log.txt is not accepted for upload – so I’ll try it here.

The content isn’t imported. I tested up the filter to ‘wprss_ftp_post_args’ and logged the post-data that runs through the function. The ‘content’ is given there, so I assume that it could be read out. The post was created finally, but the
‘content’ is not created despite an active license key.

I’ve tested it up on different systems, with different rss-feeds – it doesn’t work at all.