You can use 1‑click installation on the temporary URL and later switch to the final one via Managed WordPress.
If your domain has not yet been transferred to us, but you still want to use our 1‑click installation, you can install on the temporary URL.
After you have selected the system you wish to install, you can, during the installation under Advanced setup, choose “Use temporary URL for installation”. You will then be able to edit your site on the temporary URL found in your welcome email, or under Administration in the control panel.
When you no longer wish to use the temporary URL, remember to change it back to the correct one. This can conveniently be done via Managed WordPress in the control panel.
Select “Change Site URL” here and switch from the temporary to the correct URL.
Article from the support category: 1-Click installation