Wordai not spinning posts – API error

Hi Szabi, I have added my wordai API and made sure plugins up to date, on my website www.wepressrelease.com however, the posts being generated are being shown as 87% plagiarised, when I manually enter the same source article into wordai and manually ask it to rewrite it,  it comes back as 4% plagiarised, so I have configured something wrong. There is an API error in the newsomatic activity log but from looking at the activity in wordai the API has been used 20k today so I am confused.  Can you please help? Many thanks, Karen