C Space Survey Rewards

Has anyone ever successfully requested reward redemption for those that are a part of the C Space Survey research? I put in a request about a month ago and despite repeated messages sent to moderators have not had any reply. There was also a survey from a couple weeks ago that was supposed to end with a gift card by the end of 8/14 and now that has come and go without a peep. There is one entry in these boards where it’s assured the whole C Space process is legitimately from Sonos, but now with this lapse in reward redemption I’ve wondering if it is. Anyone? Thanks.