The tag ‘link rel=canonical’ appears more than once in the document.

Hello,

I have already to your other ticket on the same here: https://support.rankmath.com/ticket/the-tag-link-relcanonical-appears-more-than-once-in-the-document-11/?view=all

Please check and let us know.

Looking forward to helping you. Thank you.

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Hello,

Were you able to check the solution my colleague proposed to you? This one:

I assume this is happening on your AMP URLs. If you are using AMP for WP, please head over to AMP > Settings > SEO and select Rank math in the dropdown then enable canonical from Rank math. If you are using any other AMP plugin, please enable the AMP module in the Rank Math dashboard.

In case you did and it is not fixing your issue, we might need to take a closer look at the settings. Please edit the first post on this ticket and include your WP logins in the designated Sensitive Data section.

It is completely secure and only our support staff has access to that section. If you want, you can use the below plugin to generate a temporary login URL to your website and share that with us instead:

https://wordpress.org/plugins/temporary-login-without-password/

You can use the above plugin in conjunction with the WP Security Audit Log to monitor what changes our staff might make on your website (if any):

https://wordpress.org/plugins/wp-security-audit-log/

We really look forward to helping you.