Anytime somebody has an issue with PM3 set up, my default is to suggest a clean build, as fault finding can often take longer.
A couple of questions:
Where did you buy your proxmark3 from?
If not DT, can you provide a link?
Which guide did you use for set up?
link?
If you didn’t use Amal’s, i would suggest you give it a try.
Delete EVERYTHING, and start afresh
- Here’s Amals very thorough guide
- Here’s my abbreviated, barstardised and blatently plagerised version of Amals
https://forum.dangerousthings.com/t/handy-dandy-tips-and-tricks/13041/14?u=pilgrimsmaster