Go to khoindvn.io.vn Download dns profile and Esign certificate. Go to Esign Khoindvn that profile has installed. Scroll down and install one Esign (If it revokes or blacklists, try another one.) Open Esign and import your Esign Cert.zip file. Unzip it and select the cert that your esign cert is. You can check it at settings, general, vpn and device management, scroll down until your cert of the Esign appears Done, just import your ipa file, when it says import to App Library, just press import Go to Apps,find your app, signature, you can also edit when you press advanced settings! Signature, wait, install, boom!