You don't need to fix every listing check in one sitting. Start with one you can understand and act on.
Look at your listing
Open My Listings and choose your item.
Review the title, tags and grade details.
Read the explanation for a flagged check.
Is the product name clear? Does a tag describe the wrong material? Is an important option missing?
Choose one useful change
Boost SEO can suggest a title and tags. Marma can help with the wording. Keep accurate product details, including repeated words where they belong.
Save your original text, then make the change in Etsy when you're happy with it.
If shoppers already visit but don't buy, also look at Sales Factors. Photos, price and delivery can matter as much as the words.