When you migrate from HTTP to HTTPs, there are chances that some pages, especially old ones, will remain on HTTP URLs.
You can fix these issues using the Really Simple SSL plugin or the SSL Insecure Content Fixer plugin .
ssl insecure content fixer
These plugins will guide you through the steps needed to resolve any issues. The “This site is not secure” warning will then be removed from your site. You will see the padlock and “https://” in your address bar.
For more details on this, we recommend following this guide from WPBeginner to fix the mixed content error in WordPress .
Step 3: Google WebMasters Fix
When you install an SSL certificate, you'll need to tell Google that you've made the change. If you skip this step, Google will continue to collect data from the HTTP version of your site and display the "not secure" warning.
To update Google, you'll need a Google Search Console account and a Google albania phone number data Analytics account. If you don't have these accounts , sign up now and add your property to them.
If you need help with this, you can follow our step-by-step guide: How to Add Google Analytics to WordPress .
Then, from your dashboard, navigate to Sitemaps and resubmit your sitemap with the updated HTTPs version.
sitemap change https
If you added any disavow link files in Search Console, open the Google Disavow Tool and click on your HTTP version. You will need to download the file and upload it to your new profile.
Then permanently delete the old profile to avoid conflicts.