If ipa has been signed on macos 10. 14 and above, you need to verify whether a new signature is needed to change the APP to a new signature format (the old signature will not start the APP: the developer needs to update the app to run on this ios version). The verification method is as follows.

Codesign -dv /path/to/xxx.app check the integrity of ipa signature.

If codeDirectory v = value is less than 20400, ipa needs to be re-signed.