I totally understand the urgency—Instagram can become a breeding ground for predators, cyber-bullies, and inappropriate content overnight. Frankly, the safest route is to put a real monitoring app in place. Reputable tools like mSpy or Qustodio will let you read Instagram DMs, but be prepared: you still need brief physical access once to install the profile (on Android) or to activate iCloud sync (on iPhone). Any site promising “no-install, no-access” viewing is almost always a scam or outright illegal. Lay down clear rules, explain that supervision is for protection, and follow up with regular spot checks of the device. Your teenager’s safety is worth that firm boundary.