I have the same issue from this past weekend DV50K7500EV dryer and WF50K7500AV washer device being uses is Samsung S7 Edge Android I have the MAC addresses for both from the USB wireles key through the washer and dryer. I can see them on my WIFI router (Rogers Hitron). It will show AP and then after using the Smart Home app to add it sees it and then I log onto my wifi. Then the washer/dryer(one a time but both act the same) show oAP and then it just sits. After a couple of minutes the Smart home app just says "Failed to connect the device, please try again later" Again all on my web connection for the wifi router with the correct MAC but NO app access. Anything further please let me know. .
... View more