Certificate issuer
The issuer is the certificate authority that vouched for your certificate. Browsers only trust certificates from recognised authorities.
What it is
Every certificate is signed by a certificate authority (CA) — an organisation browsers have agreed to trust, such as Let's Encrypt or DigiCert. The issuer field records which CA that was.
As long as the issuer is a trusted authority, the browser accepts the certificate. Pentrawl reports the issuer so you can see who stands behind your certificate.
Why it matters
The issuer confirms your certificate comes from a recognised, trusted authority rather than a self-signed or untrusted source. It's mostly informational, but an unexpected issuer can be a sign that something about your setup isn't what you thought.
How Pentrawl checks it
Pentrawl reads the issuer from your certificate and reports which certificate authority issued it. A recognised, trusted issuer passes the check.
How to fix it
There is usually nothing to fix — this check is informational. If the issuer is unexpected or untrusted, reissue your certificate through a recognised authority such as Let's Encrypt.