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It appears that your site is experiencing a form of abuse known as referrer spam or referral spam. This type of spam involves fake website visits appearing in your analytics tools’ referrer reports, often with the aim of promoting certain websites or services. Blocking the application access helped because it likely prevented these requests from reaching your site.

Block the Referrer Domains:

• Continue blocking the access of these spammy domains. You can use your server’s firewall, modify your .htaccess file, or use a security plugin if you’re using a content management system (CMS) like WordPress.

Configure Google Analytics Filters:

• Create filters in your Google Analytics account to exclude traffic from these spammy referrers. This won’t stop the requests from reaching your site, but it will prevent them from affecting your analytics reports.

Use CAPTCHAs and Security Measures:

• Implement CAPTCHAs or other security measures on your website to reduce automated bot traffic. This won’t stop all spam, but it can help filter out some unwanted traffic.

Regularly Monitor and Update:

• Keep an eye on your analytics reports regularly. New referrer spam may emerge over time, so stay vigilant and update your blocking measures accordingly.

Consider a Web Application Firewall (WAF):

• Utilize a Web Application Firewall to filter and block malicious traffic before it reaches your website. Some hosting providers offer WAF services, or you can use third-party services.