Keychain Access → System → delete the R2R cert.
Installing a third-party root certificate from an unofficial source is fundamentally dangerous for several reasons: Total System Trust: install team r2r root certificate top
Look for in the list. If it’s there, you’re good to go. Troubleshooting Common Issues "The Digital Signature is Invalid" Keychain Access → System → delete the R2R cert
Android
wine certmgr.exe -add R2R.cer -c -r localMachine root install team r2r root certificate top
wine certmgr.exe -del -c -r localMachine root -n "Team R2R"
Assumption: "Team R2R" is a root CA certificate file you already have (formats: .crt, .cer, .pem, or .pfx). If you need to obtain it first, get the certificate file from a trusted source.