Hello,
Is this an issue with Hikashop plugin or Paypal. How can I find this out? Is there a setting in Paypal that may be not set correctly? I was going to contact Paypal but their tactic is to always wipe their hand from any responsibility.
Well, without more information about that issue and how to reproduce it we won't be able to debug it and give you any information about it, the best solution will probably be to contact them so that they can give you more information about these payments and about what's special about them.
Kind regards,
Mohamed Thelji.