you would have received notification in Search Console detailing the infraction.. You should follow these guidelines to the letter they're the key to maintaining good standing with Google.. the first thing you need to do is perform audit on your backlink profile.. this is considered cloaking and can most definitely result in action against website.. your first step should be to look at some of the common causes of structured data manual actions and based off the message that was provided to you in search console, see where the issues lie.. Either setup reminder in your calendar for few weeks prior to your expiration date or utilize service like StatusCake's domain monitoring, where it will alert you when your domain is about to expire.. there are many options, I have found that StatusCake is great for the price and as mentioned above, you would get the website monitoring and the domain monitoring in one solution.. you'll need to submit reconsideration request for Google to reindex it. such as server crash, resubmit your sitemaps to Google to start the reindexation process.. Social media can be good way to drive traffic to your site while your organic traffic is still growing plus, it will help your site rank better after you've made full recovery...
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