Weapon level bug

Product: Battlefield V
Platform:Sony Playstation 4
Please specify your platform model. Sony PlayStation 4
Are you using any software with an overlay? No
Which part of the game is the issue happening in? Multiplayer
Which part of the mode? Breakthrough
Please select your region North America
On which server did this happen?
When did this happen? (dd.mm.yy hh:mm) Continuing
Summarize your bug The selstlader 1906 is failing to rank up to level 10 to get the mastery assignment. It is stuck on 1253xp and no matter how many kills I get it will not rank up at all.
How often does the bug occur? Every time (100%)
Steps: How can we find the bug ourselves? I am not sure
What happens when the bug occurs? The rifle fails to rank up. It is only this one rifle.
What should be happening instead? Each kill should be ranking the xp of the weapon up

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This is really annoying as I am getting kills on any game mode but the weapon is failing to rank up. 

I have never had this issue before but I have had other issues so I went through my previous steps ihad been told. 

I uninstalled and reinstalled the game. 

I restored the licences. 

I restored my PlayStation database. 

I checked my router and connection. 

Failing this I am here as it has to be a bug/glitch