Issue SSL Certificate lead to err_cert_authority_invalid

[amin aloulou]

Hi, i have a website running on plesk onyx 17.5.3 with Debian 8.10, I installed a certificate from Let’s Encrypt and on the hosting settings I activated the permanent SEO-safe 301 redirect.

Every think work fine but on all my android devices (android 7.1) I receive this error (please see attached file):
Net ::err_cert_authority_invalid

i verified my domaine with : SSL Checker - SSL Certificate Verify
everythink is good.

on SSL Server Test (Powered by Qualys SSL Labs) i have A score.

Does anyone know how to deal with that ?

Regards.

 

[amin aloulou]

The website url is : Roqya - Guérison contre la sorcellerie et le mauvais oeil

 

[IgorG]

It works fine on iOS.
Maybe it is Android related issue?