I'm in the same boat. been over 23hours, nothing on block chain and nothing in my wallet. Spent $1500 USD and really starting to be concerned?
I've contacted Simplex support multiple times and have heard nothing back from them.
Yesterday I purchased $1500 USD of Bitcoin on credit card. I supplied all the required documents and received the "transaction being processed" message.
I have yet to see any action in my Coinbase wallet. Simplex trans ID = f4a39336-c171-42bf-a5f8-bf80ea25974a