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After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
I'm not sure you really have any sort of problem at all. Unless you have seen a fall in traffic/ranking etc then I wouldn't worry. DA calculations seem to lag what Google is doing anyway, so if you have not suffered in terms of traffic/ranking then I wouldn't worry at all.
DA is just an indicative metric about your domain, the end goal is conversions, so worry about it if those are hit but otherwise - stay calm and carry on (I should get that on a T-Shirt or something!) 
Gary
I'm not sure you really have any sort of problem at all. Unless you have seen a fall in traffic/ranking etc then I wouldn't worry. DA calculations seem to lag what Google is doing anyway, so if you have not suffered in terms of traffic/ranking then I wouldn't worry at all.
DA is just an indicative metric about your domain, the end goal is conversions, so worry about it if those are hit but otherwise - stay calm and carry on (I should get that on a T-Shirt or something!)
Gary