Thanks for your help posting info above.
To be honest, I am quite confused about what the issues are here. I understand that you want the field keys to match across translated field groups, but I am not sure how I can help without understanding the problem.
Can you please be short and clear with screenshots / instructions to replicate the main issue?
It sounds like there are a few issues being reported in this thread, and I am not sure how to replicate / help.
WPML is a very very very complicated and messy plugin which I have done my best to add compatibility for, but you would be shocked to see how dificult it is to have ACF even working with it at all.
I do wish that ACF + WPML compatibility was better, but I need very clear and short issues so as to not get confused by all the information.
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