I have seen this too. Not a big deal for me at least as whilst the points help, but it will take a long, long time to earn a significant amount of points this way, and my balance is more than large enough for what I might need to book anytime soon.
Fill out the feedback form and they will probably do a special credit of the points you should have got
AFF Supporters can remove this and all advertisements
Log in to the portal (Desktop) and it will show all the surveys you've completed like the below:
