TLS certificate
The certificate is in date but the chain did not verify.
4thinks.com
issued by YE1 (Let's Encrypt)
YE1 (Let's Encrypt)
issued by Root YE (ISRG)
Root YE (ISRG)
issued by ISRG Root X2 (Internet Security Research Group)
ISRG Root X2 (Internet Security Research Group)
issued by ISRG Root X1 (Internet Security Research Group)
ISRG Root X1 (Internet Security Research Group)
root