Great question — answering as the UphillTech team:
So, let's go through the following four points. Are you sure everything is okay with them? Domain Verification Issues If your domain isn’t verified correctly in Google Search Console, indexing data may be unavailable. Check your verification method in Search Console settings to ensure it matches your current site setup. Re-verify if necessary. Indexing Errors noindex tags, robots.txt blocks, or URL parameters might be hindering indexing. Check robots.txt files and noindex tags on pages that should be indexed. Make sure they’re crawlable. Technical Site Errors Slow page loads, server errors (5xx), or HTML issues can prevent indexing. Use the crawl report and “URL Inspection” tool in Search...
Full answer by Evgeny Yudin: https://webmasters.stackexchange.com/a/145598 (CC BY-SA 4.0).
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