Various bugs when i play Battlefield 1.

Everytime i log into a match i can't see my level, can't see the other players' level, can't use the guns i've unlocked, can't use a vehicle or else i'll get disconnected and i can't even see the ranking when the match ends. This problem appeared one year ago and the situation had never changed. A friend of mine had the same problem but only once, while i have it everytime i play.