Can I squeeze some information out of you?
to get the “invalid” return?
What happens when you use TagInfo?
Do you have any other readers? KBR1, ACR122U, work reader?
What phone do you have?
is it on this list?
Can you see or feel the implant, do you know the orientation
I am wondering if the xNT that is not working, may have rotated and now lies in a different orientation, remembering you are trying to lay the implant across (perpendicular) to the antenna and what used to work now needs a tweak