Found the cause for the task not counting. It was for RB (did not notice it), instead of AB. The only distinction between them are the AB and RB text. Everything looks so similar. Gaijin, make it more stand out by mode (different tab) instead of having everything in this long text blob.
There are so many interface problems in this game. It needs a major revamp, as there are so many things that do not make sense. Same goes for the rewards. For example, 10,000 SLs for 5,000 kills, etc. How about them medals that would take me more than 100 years (probably more) to get them all. Meanwhile I got to Level 100 something like 11-12 years ago. Lame and with no vision…