Help

Its April 18th 2016 almost 2 years since theyve updated the game. This wouldnt be a problem if there still wasnt very many bugs that stop me from progressing in the game, I have completed level 16 and now I can progress no further. Level 17 will not allow me to enter and so I have nothing left I can do, please help

Stealth_Hunter372 about Gunner Z