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I'm not a coder. I can't tell

Create a VM, make it offline, launch the program and test, close and delete the whole VM.

I saved it on USB stick and tried it on offline PC and paste private key selected "Map to eos public key" nothing happened!
what does VM stand for?

Dont use Internet Explorer.
Virtual Machine.

I used Chrome. It's not working.
Am i the only one having issue. I don't see anyone making comments