Make it three.
This isn't the first time I've run into this experience of a downloaded table defaulting to one ball. ANDROMEDA was another. Pressing F6 works okay when launching directly from VPX, but if you're using a front-end launcher like Pinball Emporium that isn't a comfortable option. Thanks to recent entry-level machines like my AtGames Legends Pinball there are newbies joining the community that aren't going to yet know how to do the research to debug these anomalies and just want to play the games. I wonder about the mindset of releasing a table or a mod where the default ball-count isn't at least three. Who has ever played a real machine that only offers one ball?