Hello,
Thank you for contacting Rank Math today, and we apologize for any inconvenience this may have caused.
Personal websites are those that you own outright, rather than those that are part of a partnership or a client relationship. A personal website can be a business, earn you money, and even be sold to others, but it must be yours.
The personal license has a fair usage policy that prohibits you from using the PRO on a client website or sharing it with your friends and relatives. If our systems identify any form of abuse, we will tell you. If the misuse continues, we will manually evaluate your account, and if you are only utilizing the license on your personal websites, there will be no action done.
For obvious reasons, we use a few different approaches for detecting misuse that are confidential and cannot be discussed publicly.
How do I install it on multiple sites when I buy it?
You should be able to activate the plugin on your second site just like the first, assuming you own both sites. Please go through this video tutorial: https://www.youtube.com/embed/nCDe67K_3rA
Please install the Rank Math PRO plugin files if you haven’t already from your registered account from here:
https://rankmath.com/my-account/
Once you have activated the PRO plugin, please head over to WordPress Dashboard > Rank Math > Dashboard > Help and click the connect/disconnect and then the connect button.
You will be taken to RankMath.com again where you can connect your account to activate your license.
You do not need to remove the free version of the plugin. Everything will be ported over to the PRO version.
Also, please ensure that there are no Ad-Blockers installed in your browser or your website is excluded in order to ensure a smooth experience with Rank Math PRO.
I hope this information is helpful, and please do not hesitate to contact us if you require any additional support.
Thank you.