This thread is resolved. Here is a description of the problem and solution.
I want to have 3 repeater items for the same ACF field on the EN (Default) translation, but only 2 on NL, and 4 on FR.
It is possible to achieve it by translating the pages or posts manually and not with WPML's Translation Editor. First, when you create the field group with the repeater field, add the most items (subfields) that you need. Then when you create the post in English only add the number of items that you need. And do the same for the translations but when editing them manually. For this, please see our documentation here.
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