Hi. May I ask you, I am trying to mine on pool.sumokoin.com/ and to mine to an cryptopia.co.nz address.
But the cryptopia wallet needs a payment_id as well. But I do not see any way how to provide it in the XMR-Stak-AMD config.
Any advice would be appreciated

Thank you
Don't mine to cryptopia. They won't accept pool-payments. Make your own sumo address. If you need help, just ask!