Weapon still Locked after completing Milestone For the TL-50 and Attachments

Product: Star Wars Battlefront II
Platform:Microsoft XBOX One
What is your issue related to? Challenges
Which part of it? Persistent
Summarize your bug The milestone for the TL-50 on my account says its completed at 400 kills but is still locked in weapon select. i have tried erasing my data on battlefront to see if it will restart the milestones again, but nothing happened when i reinstalled, this is also happening for other mod attachments for other guns like the FWMB-10K that i have completed since last week.
What is your gamertag/PSN ID/EA Account name? Credzie1
How often does the bug occur? Every time (100%)
Can you tell us the date (MM/DD/YYYY) that you saw the bug? 20/6/2020
What time did you see the bug? (HH:MM AM/PM) 18:00
In what game mode did the bug occur? Capital Supremacy
What is your time zone? GMT (UTC)
Steps: How can we find the bug ourselves? Checking the Milestones on my Account and then checking the Availability in Weapons select on Heavy Class
What happens when the bug occurs? The Weapons cant be Selected because it says its locked by milestones even though its already completed
What do you expect to see? To have my Weapons S electable after completing the required milestone
Please select your region Europe
AMD or Nvidia Model Number AMD

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Please assist me with Correcting this Bug, as The TL-50 is half the reason why i still play, its my favourite gun and its just really putting me off not being able to use it in-game when i have surpassed its milestone requirement by at least 100 kills. thank you for your consideration