Hello,
Thank you for reaching out, and we apologize for the inconvenience.
Please make sure that your license information has been entered correctly in SP Page Builder → Settings → License. An incorrect or missing license key can prevent Joomla from downloading update packages.
If your license information is already configured correctly and you are still encountering the following error:
Failed to download package. Download it and install manually.
please provide us with your Joomla administrator access so we can investigate the issue further and identify the root cause.
We look forward to your response.
Best regards