only spooky signals in story mode are a bug that everyone is experiencing right now. the only way to fix the bug is by waiting for or skipping to November 3rd, though if you want points, the spooky signal's small size (0.666 mb, smaller than average signal by 40%) makes it great for hording and selling to dr. bao for daily tasks. you don't have to do that though if you just want to play the game normally.