Clearly!
Lets start by getting the terminology correct, you’re talking about Edgent, not EDGE.
Some screenshots of your app when you open the device, tap the three dots and tap the three dots again would help.
The alternative approach is indeed to press and hold the Blynk Reset button on the board (as defined in Settings.H for the board type you’ve selected). This will clear the provisioned settings and allow you to go through the “+ Add Device” process again.
More info on Edgent provisioning issues here…
Pete.