rejected. why? please someone tell me the errors

Envato Authors Graphics Authors
1

Why didn’t my items get accepted? They all were 300 resolutions

Untitled-4-01
Untitled-4-01.jpg2459×2500 91.3 KB
Signal1
Signal1.jpg636×875 295 KB
Untitled-1
Untitled-1.jpg636×875 276 KB