I'm attempting to apply as Canadian living in Europe, but it locks my "Current Address" as either US or Canada. Has the online form perhaps not been fixed? it's not made clear what the difference between Primary Residence and Current Address, both of which are separate from Mailing Address, is, in the context of NEXUS.
D404, were you able to overcome this challenge? If so, I'd be grateful to know your solution as I presently face the identical challenge (also a Canadian living abroad in Europe.)