In my experience I have always recieved credits whenever I have had the oppertunity to watch videos however 99% of the time there are no sponsor videos to watch because for some reason they are not available.
Surveys in my experience for certain providers NEVER pay out as they seem to always end the survey after you given all the information with a time out error, or a sorry you don't fit the criteria for the survey. I average I would say about 1 of every 6th survey accually gives what it says. 15+ minutes per survey means I lose more time than it is worth.
Honestly I believe it is all done intentionally to frustrate people that enjoy the game but do not have the funds to invest to eigther get them to spend money or to just quit playing.
I do not like this model of pay to win. If they made all of the clubs with the same stats per tier then seperated the tiers so they only play the tier you are in and just made the avatars more realistic with the option to purchase astetic only gear they would have a broader audience and be making more money. They could also add seasons for each tier in the coin games with leader boards that you can buy into with an end of season reward.. Many ways they could better this game but lack of will seems to be embeded into these companies. I personally will never put money into a game reguardless of how much I like it if it is built around pay to win.