Fight as One not advancing

Product: Star Wars Battlefront II
Platform:Sony Playstation 4
What is your issue related to? General
Summarize your bug Fight as one milestone stuck at 19/30 for months. Using enforcers and aerials to defeat heroes but still no change
What is your gamertag/PSN ID/EA Account name?
How often does the bug occur? Every time (100%)
Can you tell us the date (MM/DD/YYYY) that you saw the bug? 03/23/2020
What time did you see the bug? (HH:MM AM/PM) 03:24 pm
In what game mode did the bug occur? Galactic Assault
What is your time zone? GMT (UTC)
Steps: How can we find the bug ourselves? Check milestones
What happens when the bug occurs? Milestone wont advance
What do you expect to see?
Please select your region North America
AMD or Nvidia Model Number

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:Help