When you first click play and the play screen comes up there is a box that say WGT Recommends and then in that box several choices of things you can do to earn XP- did these all the time until the 1 that say invite friends for 50xp came in there- no matter how many or how many times I've clicked that and invited friends never got the XP and it never left that box to give me other options. So was at just at the end of them and that is the last 1 or are there other issues and I'm missing out?