As a general proposition,
you are free to use a religious title from anywhere,
as long as doing so is not misleading or deceptive,
or in some other way contrary to law.
This may be a factor when using the title
That said, many of the typical activities of a church
have law that applies them.
In Australia, things like tax, fundraising, and conducting marriages
all have law that applies to churches in ways that websites
for, say, American online ordinations, do not mention.
There are also a number of questions of law regarding commercial activities undertaken by churches.