If you want to know how to install of the same app
: You have more than 3 signed apps on your device. Open AltStore, navigate to My Apps , and deactivate or delete an existing app before trying the installation again. To help troubleshoot or optimize your setup, tell me: What operating system is your computer running? Which iOS version is on your iPhone or iPad? how to install ipa file using altstore
: On your iOS device, go to Settings > General > VPN & Device Management , tap your Apple ID, and select "Trust" . If you want to know how to install