A drop in Domain Authority (DA) can be caused by several factors:
Algorithm Updates: Moz, the creator of Domain Authority, periodically updates its algorithm, which can lead to fluctuations in DA.
Loss of Backlinks: If your website loses high-quality backlinks, it can negatively impact your DA.
Quality of New Links: If your recent backlinks are of lower quality compared to your previous ones, it can reduce your DA.
Increased Competition: If competitors gain higher-quality backlinks, it can relatively lower your site's DA.
On-Page SEO Issues: Technical issues on your site, such as broken links, slow page speed, or poor mobile optimization, can affect your DA.
Content Quality: Outdated or low-quality content can lead to lower engagement and backlink acquisition, impacting DA.
Spam Score Increase: An increase in your website’s spam score can negatively affect your DA.
Regularly monitoring these factors and implementing SEO best practices can help maintain or improve your Domain Authority.