It would be very helpful if we could change the label in the dropdown button, even if just for different languages or the whole thing altogether. In my country, most people don't speak english.

Hi, do you found the way to change the text label ? like "Choose..." ??

This should be either customizable to any text, or at least have a general language setting so non-english speakers are not forced to read "Choose..." This hardcoded text is an unconfortable limitation of the WhatsApp integration.