The server at gum.criteo.com is taking too long to respond.
has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.
has a security policy called HTTP Strict Transport Security (HSTS), which means that Firefox can only connect to it securely. You can’t add an exception to visit this site.
This website might not support the TLS 1.2 protocol, which is the minimum version supported by Firefox. Enabling TLS 1.0 and TLS 1.1 might allow this connection to succeed.
TLS 1.0 and TLS 1.1 will be permanently disabled in a future release.
It looks like your network security settings might be causing this. Do you want the default settings to be restored?