Are travel agents officially allowed to buy
Genie+ or do they have to log in with the client's credentials on the app (which they are not supposed to do)?
If you are already booking through a
travel agent, this could help (if they do it as a free add on to the commission they are already getting). If you are a DVC member with an annual pass it seems somewhat questionable. The travel agent would need to charge a separate fee for this service - otherwise s/he isn't getting paid.
Disney should fix this properly and allow international guests to book.