Algumas certificadoras trabalham com certificados intermediários. Nesse caso a certificadora não lhe enviará apenas um texto de certificado criptografado, mas as vezes 2 ou mais textos. Nesse caso, os certificados deverão ser colados juntos no Painel da Hostnet, um embaixo do outro, começando pelo de menor autoridade (o do seu site) para os de maior autoridade (os das certificadoras intermediárias), sem separação de linhas. Contate a sua certificadora para obter essa informação.

Exemplo de como devem ser inseridos 2 certificados intermediários dados pela certificadora. O de menor autoridade em AZUL e o de maior autoridade em VERDE. Ambos colados um embaixo do outro sem separação de linhas:
-----BEGIN CERTIFICATE----- MIIEvzCCA6egAwIBAgISESG0q8VlkMlLRKJHxZL5ceMpMA0GCSqGSIb3DQEBBQUA MC4xETAPBgNVBAoTCEFscGhhU1NMMRkwFwYDVQQDExBBbHBoYVNTTCBDQSAtIEcy MBsXDTEezMTIxMTExNTQwMVoXDTE0MTIxMjExNTQwMVowRDEhMB8GA1UECxMYRG9t YWluIENvbnRyb2wgVmFsaWRhdGVkMR8wHQYDVQQDDBYqLmtpbGxlcmhvc3RuZXRz c2wuY29tMIIBIjANBgkqhkiG923w0BAQEFAAOCAQ8AMIIBCgKCAQEAvey/42XA722x dtepCGjiIJ2VUMmYhGQJyqwYvxjCVrfBZEQwFi5GpcRE9i0Cv9PPp1LsffOGv2YlTz VhSdIMqyceweGsrppeqweMwOO20dg+HK5x0rAW9rW7Rjh5ihxCwHyB8i9ouoIZX7MXNHBAu 7liLPOk4/BC9PqewqWaS8MBBdJNiSy+R9DeVg4V55BDc6FwNLB4XOhsjKFYQWZLbJIS8 V/MC8Sw0yKEjI7ytxAcNkKUJGtHbfczZI9C/bGsSadYL6Ne13gPla6NytzLtSNYT vPo88QOral3CkHNMhr12NE44vgBXGY1wQL4B0pW+PwT3f1Y1nWrJ6UD7fZB5RlXT 0hPYr5LpqQIDAQABo4IBvzCCAbswDgYDVR0PAQH/BAQDAgWgMEkGA1UdIARCMEAw PgYGZ4EMAQIBMDQwMgYIKwYBBQUHAgEWJmh0dHBzOi8vd3d3Lmdsb2JhbHNpZ24u Y29tL3JlcG9zaXRvcnkveDcGA2UdEQQwMC6CFioua2lsbGVyaG9zdG5ldHNzbC5j b22CFGtpbGxlcmhvc3RuZXRzc2wuY29tMAkGA1UdEwQCMAAwHQYDVR0lBBYwFAYI KwYBBQUHAwEGCCsGAQUFBwMCMDoGA1UdHwQzMDEwL6AtoCuGKWh0dHA6Ly9jcmwy LmFscGhhc3NsLmNvbS9ncy9nc2FscGhhZzIuY3JsMH8GCCsGAQUFBwEBBHMwcTA8 BggrBgEFBQcwAoYwaHR0cDdvL3NlY3VyZTIuYWxwaGFzc2wuY29tL2NhY2VydC9n c2FscGhhZzIuY3J0MDEGCCsGAQUFBzABhiVodHRwOi8vb2NzcDIuZ2xvYmFsc2ln bi5jb20vZ3NhbHBoYWcyMB0GA1UdDgQWBBTkib0I3hKo+HJvGMc2KRvfYdTwVzAf BgNVHSMEGDAWgBQU6hlV8A4NMsYfdDO3jmYaTBIxHjANBgkqhkiG9w0BAQUFAAOC AQEAhMlaYVMakzI5AbejMjlTb2HaMyvLUgp5ZkLPD0KS2okLE5avf3M5dcUbAcR8 VeXLQyPhzvg/f73dtPmOWJ3Ynf6yGHkM4LSnMcXxADMHhmv1naTnQ+T5biPW059n 7jHf0svxF8Dniaj8EmSDGf482sfknetCn6q7GQk8Ll3XAnVNJM7zeqCZwPOk9ZND USfRSjihCYKx2vVw26p6xQxr8so8WdIcqHZBFhe3A2VdN5nKBFgRBuDItXK8bZ/E gwUXyZbplTkUpUNylpXnz2sLlaTQgx4poSEFS/+dwLmAvGewwgKaHe+u3wGmag85 BS6tMhlHKhGQitMXQLgfBcSPzg== -----END CERTIFICATE----- -----BEGIN CERTIFICATE----- MIIEvzCCA6egAwIBAgISESG0q8VlkMlLRKJHxZL5ceMpMA0GCSqGSIb3DQEBBQUA MC4xETAPBgNVBAoTCEFscGhhU1NMMRkwFwYDVQQDExBBbHBoYVNTTCBDQSAtIEcy MBsXDTEezMTIxMTExNTQwMVoXDTE0MTIxMjExNTQwMVowRDEhMB8GA1UECxMYRG9t YWluIENvbnRyb2wgVmFsaWRhdGVkMR8wHQYDVQQDDBYqLmtpbGxlcmhvc3RuZXRz c2wuY29tMIIBIjANBgkqhkiG923w0BAQEFAAOCAQ8AMIIBCgKCAQEAvey/42XA722x dtepCGjiIJ2VUMmYhGQJyqwYvxjCVrfBZEQwFi5GpcRE9i0Cv9PPp1LsffOGv2YlTz VhSdIMqyceweGsrppeqweMwOO20dg+HK5x0rAW9rW7Rjh5ihxCwHyB8i9ouoIZX7MXNHBAu 7liLPOk4/BC9PqewqWaS8MBBdJNiSy+R9DeVg4V55BDc6FwNLB4XOhsjKFYQWZLbJIS8 V/MC8Sw0yKEjI7ytxAcNkKUJGtHbfczZI9C/bGsSadYL6Ne13gPla6NytzLtSNYT vPo88QOral3CkHNMhr12NE44vgBXGY1wQL4B0pW+PwT3f1Y1nWrJ6UD7fZB5RlXT 0hPYr5LpqQIDAQABo4IBvzCCAbswDgYDVR0PAQH/BAQDAgWgMEkGA1UdIARCMEAw PgYGZ4EMAQIBMDQwMgYIKwYBBQUHAgEWJmh0dHBzOi8vd3d3Lmdsb2JhbHNpZ24u Y29tL3JlcG9zaXRvcnkveDcGA2UdEQQwMC6CFioua2lsbGVyaG9zdG5ldHNzbC5j b22CFGtpbGxlcmhvc3RuZXRzc2wuY29tMAkGA1UdEwQCMAAwHQYDVR0lBBYwFAYI KwYBBQUHAwEGCCsGAQUFBwMCMDoGA1UdHwQzMDEwL6AtoCuGKWh0dHA6Ly9jcmwy LmFscGhhc3NsLmNvbS9ncy9nc2FscGhhZzIuY3JsMH8GCCsGAQUFBwEBBHMwcTA8 BggrBgEFBQcwAoYwaHR0cDdvL3NlY3VyZTIuYWxwaGFzc2wuY29tL2NhY2VydC9n c2FscGhhZzIuY3J0MDEGCCsGAQUFBzABhiVodHRwOi8vb2NzcDIuZ2xvYmFsc2ln bi5jb20vZ3NhbHBoYWcyMB0GA1UdDgQWBBTkib0I3hKo+HJvGMc2KRvfYdTwVzAf BgNVHSMEGDAWgBQU6hlV8A4NMsYfdDO3jmYaTBIxHjANBgkqhkiG9w0BAQUFAAOC AQEAhMlaYVMakzI5AbejMjlTb2HaMyvLUgp5ZkLPD0KS2okLE5avf3M5dcUbAcR8 VeXLQyPhzvg/f73dtPmOWJ3Ynf6yGHkM4LSnMcXxADMHhmv1naTnQ+T5biPW059n 7jHf0svxF8Dniaj8EmSDGf482sfknetCn6q7GQk8Ll3XAnVNJM7zeqCZwPOk9ZND USfRSjihCYKx2vVw26p6xQxr8so8WdIcqHZBFhe3A2VdN5nKBFgRBuDItXK8bZ/E gwUXyZbplTkUpUNylpXnz2sLlaTQgx4poSEFS/+dwLmAvGewwgKaHe+u3wGmag85 BS6tMhlHKhGQitMXQLgfBcSPzg== -----END CERTIFICATE-----