Ask @KingdomLikesOfficial:

Hi, I deleted my website from my website list by accident, and when I tried to add it back again, I got an error message saying, 'webpage already exists.' Could you fix this for me? I will provide the website address. Thank you!

Hi, you can re-add your site in the section "My Sites", enable the option "Show delete sites" (top of the table) and click in the lock of the site that you want to re-add and thats it.

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