Non ATF+4 in a A500 trans..?
Late at night I ripped a cooler line out when it caught on a tie rod end miles from home in the time before cell phones. Only had a gallon of pure Prestone and no funnel. I made it home on coolant/atf mix as it dumped out the line and onto the exhaust. Smoky fun.
You'll be fine. I doubt any damage will occur in the short term, but hopefully this thread bump will get you some better responses.