First off, report hackers here: https://reports.cubecraft.net/report. Second, You need video evidence to report hackers as images can be easily photoshopped. Try using free recorders like bandicam, https://www.google.com/#q=bandicam recorder for windows 10. Have fun banning people :P
Minecraft PC IP: play.cubecraft.net
CubeCraft Games
1212hawks_
xMrExa
that could also show when they threw him from the island so we could think you screenshoted in the mid are when he was falling down.