Hi @MTS_Jennifer Thank you so much for you reply. I'm going to try to answer this, I've looked around in my sandbox accounts and cannot identify a "merchant ID", all I could find under the Business-Pro account I'm trying to use is this "Account ID" which is 34NP52MQELEZ4 I hope I'm doing everything correctly, was that the ID you needed? My developer account is Business and the Sandbox account under it is Business-Pro. If this isn't right, can you let me know what I need to do? Thank you very much!
... View more
