At the release 2.5.11https://github.com/XOOPS/XoopsCore25/releases in the file XoopsCore25-master\htdocs\language\english\auth.php missing ending ?> I fixed it myself. How can this affect?
Deepl might be helpful in that case. But the whole process is taking a time too. I have a friend who wants to invest, and I have nothing to show except the Homepage, which is complete by 20%.