Order completion never called

I have a problem that my orders in Drupal Commerce are never completed. All rules using this event are not executed. No new user accounts are created for new customers nor order confirmation mails are send out. After completing Paypal WPS payment, orders go immediately into processing. Did I miss/misunderstood/misconfigured something? I thought after reviewing, the order should be completed. For preliminary solving this, I added the following rule:

{ "rules_fire_up_order_completion" : {
"LABEL" : "Fire up order completion",
"PLUGIN" : "reaction rule",
"WEIGHT" : "-10",
"OWNER" : "rules",
"REQUIRES" : [ "rules", "commerce_checkout", "commerce_payment" ],
"ON" : { "commerce_payment_order_paid_in_full" : [] },
"IF" : [
{ "data_is" : {
"data" : [ "commerce-order:status" ],
"op" : "IN",
"value" : { "value" : { "checkout_payment" : "checkout_payment" } }
}
}
],
"DO" : [
{ "commerce_checkout_complete" : { "commerce_order" : [ "commerce_order" ] } }
]
}
}

Is this correct?

Thanks