I have downloaded the certificate from link Sectigo Site -https://support.sectigo.com/articles/Knowledge/Sectigo-Intermediate-Certificates
Domain validation -Sectigo RSA DV Bundle [ Intermediate + Cross Signed ] https://comodoca.my.salesforce.com/sfc/p/#1N000002Ljih/a/1N0000000wpc/Dpl1Z0WPKdXMFFcWVLP4OhlPQzse22s919GMgDbM_is
I even tried the one on Ebay Site but both are failing
- Warning: SoapClient::SoapClient(): SSL operation failed with code 1. OpenSSL Error messages: error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed