Answer: Contact us at firstname.lastname@example.org or +46 (0)10 - 161 01 99 and we'll help you.
Answer: No, the address fetched using our GetAddress is only allowed to be used for the Collector invoice payment methods.
See our Partner Portal user guide on how to use the Portal.
Answer: Yes. Collector will always pay out the total amount of the purchase sent in when the invoice is succesfully activated, regardless of how the end customer chooses to pay the invoice later on.