Free shipping (FS) voucher scams are becoming more rampant lately. "Hey we have 2 hours limited FS for FS seller voucher available for you to claim and use later!" -Shopee So I claimed it, its in my voucher list. However when I'm about to use it, the first 3 minute of the FS hour, voucher is invalid as "fully redeemed". Happens too many times to be a coincidence or bug. I've seen this many times and its definitely not legit, just a pathetic attempt at bait and switch.