First check that your settings did not get reset. Sometimes you may think that BetterTTV isn’t loading but you may have cleared your cookies (which resets the settings). See if you have “BetterTTV Settings” within the Twitch chat settings. If so, then BetterTTV is probably working correctly. Click on “BetterTTV Settings” and try toggling the settings you are missing or that are not working to see if that fixes your problem.
If you were not able to locate BetterTTV Settings, BetterTTV may not have loaded. Try loading https://cdn.betterttv.net/cdn-cgi/trace. This is a test URL on our CDN. If it doesn’t load, our CDN may be having temporary issues. You can run a traceroute to “cdn.betterttv.net” and send us it via our contact form.
If the URL loads, then it may be something locally on your computer causing the problems. Try clearing your cookies and cache from the beginning of time.
If that doesn’t work, there may be another add-on conflicting with BetterTTV. Disable all other addons and check if that fixes your problem. If so, toggle the addons on again slowly and find out which is problematic. Otherwise, disable your antivirus/firewall and check if that fixes the problem. If so, contact their support team for help whitelisting BetterTTV or to complain it is blocking something it shouldn’t be.