Even with a good download, you may encounter problems. Here are the solutions from the 4PDA thread.
: Users maintain a meticulous archive of versions, including the massive 1.90 "Blast Processing" update and the long-awaited 2.2 release. Geometry Dash - 4PDA
The 4PDA community has developed several workarounds for common Android-specific bugs: Save File Recovery: Look for the "Instructions" ( Инструкции ) section for guides on manually backing up your CCGameManager.dat CCLocalLevels.dat files using a root explorer. Performance Optimization: Even with a good download, you may encounter problems