This thread is resolved. Here is a description of the problem and solution.
Problem: I can't set media content in an ACF group as copy.
Solution: you need to install ACF Multilingual to properly translate ACF
This is the technical support forum for WPML - the multilingual WordPress plugin.
Everyone can read, but only WPML clients can post here. WPML team is replying on the forum 6 days per week, 22 hours per day.