To open an account with Stake, Macquarie requires you to have a "nexus" to Australia.   This means you can apply for an account if you are a resident, on a work or student visa or any other status that gives you some level of residency. 

In some instances, Macquarie will request that you provide your connection/nexus - you may need to provide some additional documentation, like a passport, license, residency, address, visa or work permit etc.