Lost Connection to API - FTL Offline

[jacob.salmela]

Please see:

Pi-hole v3.3 Released: It's "Extra" Special

Originally published at: Pi-hole v3.3 Released: It’s “Extra” Special – Pi-hole Update 2018-02-20 18:05 Hi All, After a few days of pulling out our hair and troubleshooting this whitelisting issue that some of you have reported, we're finally getting to the bottom of it. The good news is, whitelisting is not completely broken. You can still whitelist domains from the cli with no issues by calling pihole -w [domain-to-whitelist]. The issue only affects whitelisting from the admin page (whit…

And the direct links to the solutions:

Why can't I run Pi-hole v3.3+ on Raspbian Jessie or with dnsmasq < v2.72?

Update: 2018-08-06 As of v4.0, Pi-hole ships with _FTL_DNS, our fork of dnsmasq, which should restore compatibility with Raspbian Jessie. We still recommend installing a newer OS as Jessie is EOL anyway. By default, Raspbian Jessie only supports dnsmasq v2.72, which does not work with the log-queries=extra flag, which is required for Pi-hole v3.3+. You may see error messages such as: dnsmasq: extraneous parameter at line 37 of /etc/dnsmasq.d/01-pihole.conf failed! There are two options…

How do I revert to a previous version of Pi-hole?

if you want to run a different version of Pi-hole, it is possible to install an older version. Typically, we release all three components of Pi-hole at the same time (Core, Web, and FTL), so you'll usually want to install version from the same "release." For example, we ran into some issues with v3.3 and dnsmasq compatibility with some systems, so some users needed to revert to v3.2.1 (Core and Web) but as part of the 3.2.1 "release," the latest version of FTL was 2.13.2. Because we version e…