If conversion rates drop while bounce and exit rates go up, which

You should install a chatbot immediately with HubSpot’s Conversations tool to address the conversion rate drop. This option may sound wrong, but chatbots have been proven to always increase conversion rates, even on sites that are designed poorly.
You should increase your Google Adwords Spend through HubSpot’s Ads Add-On immediately to bring the right audience to your site.
You should audit the site for design issues and other site performance issues in a systematic manner. The metrics suggest that the users may not be satisfied with the new site.
The users have not yet visited the new site. You should ignore any data that suggests your site is underperforming for the first seven days after migration.

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