Spotify uses Widevine DRM. Legitimate iTubeGo has a license to decrypt this. Cracked APKs cannot emulate this license, so they fail instantly. If a cracked APK claims to download Spotify, it is lying to capture your Spotify login credentials.
The official iTubeGo app (free on Google Play) lets you:
Instead of chasing a risky iTubeGo Premium APK updated, consider these legitimate alternatives.