Hi Alex,
www.hikashop.com/support/documentation/259-hikamarket-fees.html
We called "fee mode" when your store will be paid directly and you will have to pay them back.
We called "commission mode" when your vendors are paid directly and they have to pay you back (your commission).
You were using the "commission mode" but the payment plugins were configure to pay the store and not the vendors.
Few months ago, when I checked your configuration, the "fee mode" (which is the default mode in HikaMarket) were selected so I didn't understand why this option changed since that day.
Maybe the words for this option are not the right one and create some confusion.
If you or someone have a suggestion to improve it and avoid the general confusion, I will be happy to update the language files.
If you are using the "commission mode", you are saying to HikaMarket that the vendor will receive the payments directly.
HikaMarket can't know that the payment method are not sending the money to your store and not the vendor (unless you specify it in the payment plugin configuration). So it can't warn you if it does not have the possibility to know.
You can use paypal, you can use all HikaShop payment plugins, but you have to use the right HikaMarket mode to let him process the price calculation correctly.
Regards,