I have been an expat for over a decade. Where you live now, is largely irrelevant to your investments.
Sure, some things make a difference. For example, if you live in the US as an expat, there are tax implications.
But in general, there are loads of expat-focused accounts, which are designed to be flexible, that are portable, and move with you when you move to another location.
Often all you need to do is update your credit/debit card payment or just send it from a new bank account.