Hopefully give you some pointers to get you on track.
The iceman fork is better than the factory, FYI another forum member also bought from the same seller on AliExpress and asked for the Iceman Fork, however it arrived with the Factory Firmware…2.0 I think.
So you need to confirm, because your computer and Proxmark need to have matching Software / firmware, or you likely have issues
However, if it is on Factory Firmware, That is not necessarily a bad thing, if you want to use it with your phone also.
What platform are you installing on, Windows, Mac, Linux?
There are a couple of approaches we can try, for want of more info, lets go for:-
Starting with a clean canvas, delete the PM installation folders on your puter.
Try following this YouTube guide, from your PM3 Easy supplier, then let us know how you go, including specific issues, or hopefully it works
There are plenty of other people on here that will be able to give you some input
Also, there is a specific Proxmark Forum that should be able to answer more of your questions
Haha, was too busy replying and missed your success updates,
That is awesome news…