Need help with Usenext

So, i registered today with CJ (didn't know about CJ before lol) and i heard usenext offer pays pretty good

I am not sure, which one i am suppose to use (can international people participate)

 

Better go with the third one or the first one...

 

for example if i choose the first one
will i get commission if international people use that link to buy the membership or it's only valid for UK customers?

 

I've used the third one and got commisions for international signups also..

 

k thanks for the help