A platform for Microsoft's advertising efforts designed to manage all advertising and reporting for partner advertisers. Previously known as Bing Ads and adCenter.
I had a similar issue with Clarity before. If both heatmaps and recordings have stopped completely, I’d first check whether the Clarity tracking script is actually loading on the live site and whether it’s sending data to the correct Project ID. Also check browser ad blockers, CSP settings, consent/cookie banners, and whether the site recently changed anything in GTM or the theme.
If the script is loading correctly but Clarity is still showing zero data, checking the browser Network tab for Clarity requests can help identify where it’s failing. It may also be worth testing the standalone Clarity code without GTM to rule out a tag manager issue.