How to load expansions into refx Nexus 2 and Master-Keyfile

Hi mate, i have a massive expansion pack but cant seem to load it in nexus. I cant even find the key you first installed. Please help?

i bought it The expansion and i can't open on Nexus ! Can You Fix it ???

How to get a master keyfile ? Please Help Me !

Thank you!

Why you deleted your replys??
Do not worry, if you tell us not then no.

We'll get it, but why delete your responses?

I will ask you again, if you can email me the file of the master key I will be happiest having ..
Good day man

How do I load my old expansions into my new nexus?