Overcoming Overseas Retreat Booking Hurdles

I am organizing an international wellness retreat for my clients next month, but I am hitting a huge wall when trying to send initial deposit reserves to independent local instructors abroad. My primary bank flagged the foreign transfers, and standard wire processing times are way too slow to lock in our location bookings on time. Since I rely entirely on my iPhone while traveling and have zero experience using modern digital asset management software, I am searching for a straightforward iOS tool that handles initial account verification without days of waiting. Is there a reliable mobile app that can help a total beginner handle global project reserves smoothly?