Steps I took:
1. Created a userid (@FarikoBrainiac)
on www.fariko.nl (a wordpress-site) site with twitter: worked fine.
2. Created a userid (Alexander korf) on the same site www.fariko.nl with facebook: worked fine.
3. Then I wanted to connect the facebook account to the @FarikoBrainiac
4. I deleted userid Alexander-Korf on fariko.nl (I have admin rights)
5. I deleted the facebook from my alexander-korf FB-account
6. logged in using the twitter login
7. went to my WP-profile
8. tried to connect my FB account alexander-korf and gave permission
9. it created a new new WP-user on my WP site in stead of connecting it to my @FarikoBrainiac
can you please help?