When configuring the push certificate, it becomes untrusted as soon as it is opened, and many solutions have been searched.
The first way is to double-click the certificate, open it and select "always trust" in the trust
After selecting trust, the certificate becomes like this, showing "This certificate is marked as trusted by this account"
As for whether it can be used, it is not clear, because the second method has been found, because Apple has revised the relevant regulations and pushed the certificate
Open Apple PKI - Apple downloads the AppleWWDRCA file, select G4, double-click to install, and the certificate has become trusted.
AppleWWDRCA (Apple Worldwide Developer Relations Certification Authority) certificate: Actually it is
对iOS证书（dev和dis证书）的授权证书，其公钥用于解密证书的可靠性. iOS and Mac OS X systems (when Xcode is installed) will automatically install the intermediate certificate (Intermediate Certificates) of AppleWWDRCA.cer (Apple Worldwide Developer Relations Certification Authority).