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You have to follow the following steps to Increase DA ( Domain Authority) of your site;

1. Try to make backlinks on relevant site of your niche.
2. Try to make backlinks on high authority sites like google, amazon, 7 Microsoft etc.
3. Keep social Sharing on different platforms.

I have a food pricing website and its not growing form the last month due to recent google update. I also want a complete site SEO audit. If anyone help me to solve this issue. thanks in advance.

I faced the same issue when I wanted to check the DA (Domain Authority) of my client's website. Moz had a separate website where you could easily check these things, but they shut it down. They probably did this to make everything simpler by combining all their tools in one place. It might have been confusing for users to go to different websites for Moz’s services, so now everything is on the main Moz site. Even though it was a bit inconvenient at first, it’s probably better this way because now you don’t have to jump between sites to get your SEO tools.