A lot of potential but I’m having an issue – Server Maker - Multiplayer for Minecraft PE Review

The servers I make are being made but when I go in them it has the bubbles constantly in the corner like I’m underwater (not running out just there) and I cant walk on the ground normally. Every time I try to jump nothing happens and when I walk it’s like I’m flying in creative mode even though I’m on survival. I’m stuck in one spot, I can’t go up or down even if I’m over a hole. HELP!
Review by Friggindope on Server Maker - Multiplayer for Minecraft PE.