Manual Payment won't credit Affiliate

I am using the Affiliates and MarketPress plugin, both up to date.

I have the MarketPress and Debug addon activated in the affiliates plugin.

I have the affiliates income set to 30% in MarketPress.

When a user places an order the debug states that the cookie is working. It does mark a completed payment as “signup” only.

When the payment or “order” is marked as paid also manually within the wp-admin marketpress order section, it does not mark that the affiliate earned anything.

I can only use the manual gateway as payments are done in cash. The order must be created on the internet and affiliates must earn money this way.

Any suggestions? Thanks