Your sun counter is frozen at a maximum value (usually 9999), or every sun drop gives you thousands of points. You can plant anything immediately.
Use Cherry Bombs as your primary weapon. Since there is no cooldown, you can manually blast every single zombie that enters the screen. Your sun counter is frozen at a maximum
Search for a reputable APK hosting site. Look for recent comments to ensure the "No Cooldown" feature is actually working in the latest version. Your sun counter is frozen at a maximum