How the House Edge could be bigger than 5%? I don't understand. The Hi-Lo game is provably fair, you can change your client seed for every roll while knowing the server seed hash. For 2.0 odds, winning ranges are 0-4750 and 5250-10000 then the RTP is 2.0 x 47.5%=95%
You think wrong. If you always click on hi, only then will you know about House Edge = 15%