Hi Esmi, sorry about that. Have I to post a new one in https://www.ads-software.com/support/plugin/eshop or can I continue on this thread?
Actually I verified again – as I already did it, but to be sure – all the settings in Paypal and eShop and everything seems correct, but the “Invalid payment” message still after a new test and is failed on eShop.
I would be grateful to you if you can help me on this issue!