Thanks to the help of @Satur9 I was able to get my NExT and xSIID installed. Both tags can be read and written to fine but I cannot see any lights coming from the xSIID. I tried reading from a phone and an ACS ACR122U
On the surface I can’t see any significant swelling although it is a bit bruised.
Could it be the bruising or did I just put a defective unit inside me?