Thank you for bringing this issue to our attention, and I apologize for any inconvenience it has caused.
Upon reviewing the situation, I have identified the root cause. Please note that this is not an SP Page Builder issue. To use the SP Page Builder's frontend editor, users must log in to the website's frontend.
In your case, it appears that Akeeba Admin Tools is currently configured to block frontend user logins. This configuration prevents access to the frontend editor.
To resolve this, you can adjust the Akeeba Admin Tools settings to allow frontend logins for the relevant users. Once enabled, you should be able to access the frontend editor without any issues.
If you need assistance in modifying these settings, please let me know, and I’ll be happy to guide you.
Thank you for your understanding and cooperation.
Best regards