Atic, I don't know if this is the best way to reach out to you, but I would really appreciate it if you could help me out
I've had this same problem of not being able to equip my unlocked level 20 weapon, since it's bugged, EA Help manually gave me the Level 20 weapon in Armoury through Shipments but they were unable to help me unbug my Level 20 Support Special assignments, and said it's a desync delay and that I should just wait it out.
I'd really love the special assignments I grinded for if you could do anything please add me and I'll provide you with any details you need again would be very thankful
~~~~~EDIT:~~~~~
Nevermind, after several tries at EA Help one of their Advisers was kind and helpful enough to grant me my MG42 & Support Mastery Special Assignments manually, it only takes a matter of minutes. Hopefully DICE patch this out for the people who haven't gone to EA Help to fix this yet.
Hope anyone having this issue fixes it through EA Help successfully =)