Weekly challenge, experience bug

After finishing a match that would help me to complete the weekly challenge (week 7) so that I get 20k EXP. The problem is that when I exit the match on the screen it says that I was able to complete everything and I got the 20k EXP but in the total EXP at the bottom it doesn’t reflect that number as it usually does, which should be 21,372 EXP but instead it only reflects 1,372 EXP, also the level doesn’t reflect that level up either because with that amount of EXP they are supposed to give me at least more than 2 or 3 levels which means that I should go up the current level. It’s not the first time it happened to me, it also happened in the collaboration event with Porsche, in the lunar new year as well. This problems always happens with large sums of EXP and losing that means is not being able to reach the goal that one wants in the pass. I don’t know if at this point it can be solved but I hope for an answer to know what to do next time if it happens. Thank you for your time.