Chargebee currently supports certificates whose root certificate is from any of the following Certificate Authorities (CA). You can also cross-check your certificate installation at Qualys SSL Labs.
ePKI Root Certification Authority
VeriSign Trust Network
Actalis Authentication Root CA
KEYNECTIS ROOT CA
Starfield Services Root Certificate Authority - G2
SwissSign Silver CA - G2
Sonera Class1 CA
VeriSign Class 3 Public Primary Certification Authority - G5
UTN-USERFirst-Hardware
AddTrust Qualified CA Root
VeriSign Class 3 Public Primary Certification Authority - G3
Class 3P Primary CA
SwissSign Gold CA - G2
Starfield Class 2 Certification Authority
GlobalSign
VeriSign Trust Network
USERTrust RSA Certification Authority
thawte Primary Root CA - G2
Entrust Root Certification Authority - G2
USERTrust ECC Certification Authority
Chambers of Commerce Root - 2008
VeriSign Universal Root Certification Authority
USERTrust RSA Certification Authority
Go Daddy Class 2 Certification Authority
UTN-USERFirst-Object
AddTrust Class 1 CA Root
Global Chambersign Root - 2008
Security Communication RootCA2
Entrust Root Certification Authority
Security Communication RootCA1
Go Daddy Root Certificate Authority - G2
Equifax Secure eBusiness CA-1
QuoVadis Root CA 3
QuoVadis Root CA 2
VeriSign Class 3 Public Primary Certification Authority - G4
Chambers of Commerce Root
VeriSign Trust Network
Deutsche Telekom Root CA 2
Certum CA
Security Communication EV RootCA1
GlobalSign
America Online Root Certification Authority 2
DST Root CA X3
VeriSign Class 1 Public Primary Certification Authority - G3
SecureTrust CA
DigiCert Assured ID Root CA
USERTrust RSA Certification Authority
GeoTrust Global CA
USERTrust RSA Certification Authority
T-TeleSec GlobalRoot Class 2
DigiCert High Assurance EV Root CA
DigiCert Global Root G2
GeoTrust Primary Certification Authority - G3
Buypass Class 2 Root CA
StartCom Certification Authority
DigiCert Global Root CA
UTN-USERFirst-Client Authentication and Email
Baltimore CyberTrust Code Signing Root
Certum Trusted Network CA
QuoVadis Root Certification Authority
T-TeleSec GlobalRoot Class 3
AddTrust External CA Root
VeriSign Class 2 Public Primary Certification Authority - G3
GTE CyberTrust Global Root
Baltimore CyberTrust Root
TC TrustCenter Universal CA I
GTS Root R4
Thawte Timestamping CA
DigiCert Global Root G3
GeoTrust Primary Certification Authority
Class 2 Primary CA
TC TrustCenter Class 2 CA II
SwissSign Platinum CA - G2
UTN - DATACorp SGC
Starfield Root Certificate Authority - G2
SecureTrust CA
Equifax Secure Global eBusiness CA-1
Equifax Secure Certificate Authority
thawte Primary Root CA - G3
TC TrustCenter Class 4 CA II
GeoTrust Universal CA
Buypass Class 3 Root CA
Entrust.net Certification Authority (2048)
Sonera Class2 CA
America Online Root Certification Authority 1
AddTrust External CA Root
Class 1 Public Primary Certification Authority
ISRG Root X1
DigiCert Global Root G2
AAA Certificate Services
GlobalSign Root CA
COMODO RSA Certification Authority
Class 3 Public Primary Certification Authority
USERTrust RSA Certification Authority
thawte Primary Root CA
Entrust.net Secure Server Certification Authority
GeoTrust Primary Certification Authority - G2
SSL.com Root Certification Authority RSA
Amazon Root CA 4
Amazon Root CA 3
Amazon Root CA 2
Amazon Root CA 1
Amazon RDS Root CA
Amazon RDS Root 2019 CA
Amazon RDS Preview Root 2019 CA
Amazon RDS me-south-1 Root CA
Amazon RDS Beta Root 2019 CA
Amazon RDS ap-east-1 Root CA
GoDaddy Secure Certificate Authority - G2