Instagram iOS browser dont recognize Let-s encrypt cert

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My domain is:

I ran this command: click on @dralucianabarberino BIO and click in the linktree link an click on "website" link

It produced this output: "O certificado de segurança deste site não é confiável"

My web server is (include version):
PHP 8.1 on Linux
The operating system my web server runs on is (include version):

My hosting provider, if applicable, is:
digital ocean (san francisco)
I can login to a root shell on my machine (yes or no, or I don't know):
I'm using a control panel to manage my site (no, or provide the name and version of the control panel):
The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot):
dont know that

Hi @robsonximenes, and welcome to the LE community forum :slight_smile:

Please provide a better detailed description of the link that throws that error message.

I don't understand what you mean by:


The website works fine for, but the linktree goes to which doesn't work. (note the extra www.)

Either add the www. to the certificate, or remove it from the link in linktree.

The problem is not limited to the instagram embedded browser, as I see it in an external browser too.

@dralucianabarberino | Linktree ->


I believe the embedded browser for Instagram’s iOS and android apps still use the system library and trust store. This may have changed, but I don’t think so.


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