hi please could someone help?

Hello Kira,

You can assign your custom domain name to the site published with Nicepage - https://nicepage.com/doc/1293/assign-a-domain
You can publish sites with Nicepage hosting using Desktop application or Online builder.
Please specify do you need to assign custom domain to the site published with Nicepage or Joomla site built with Nicepage extension?
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Sincerely,
Anna T
Nicepage Support Team

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