Thank you for taking the time to submit your bug/issue! Please use the points below as a guide when submitting.
Device & model you are using Things Uno (Leonardo)
What dashboard are you using? Web
*Error: DevEUI already used
Seems like a user already registered the device.
Seems plausible, since i bought this board from a fellow developer.
Can you remove this device, so i can use it for my dashboard?
PM for DevEUI.