Updated app - now getting ‘Course Transfer Failed’

I have a Venu 2, golf courses transferred over fine until a few weeks ago. I thought it was an issue with the watch. As it was still under warranty Garmin kindly replaced it. Then tried to download my courses, but same issue - Course Transfer Failed. I disconnected the watch to this I phone and attached to my other iPhone I use for work. Which is a newer version, no problems the courses uploaded. But when I recent back to original phone, it just shows one course every time, no matter where I am. How can I solve this issue? I have deleted the app on my personal I phone, reset it etc. Will there be another update to fix this issue? Any advise would be appreciated, as I don’t want to keep flip flopping or take my work phone to the course.