Problems signing into development mode

Good afternoon team,

I have been developing a project from 0 for some months in Ghost, the fact is that I have been using the login function without problems, with users added manually …

Until the last update, I could not get the messages to my email, with the Magic link for access.

Does anyone know if there have been any recent changes that I have missed?

I need to be able to work in development mode, to adjust designs and usability, and I can’t work with it.

Thank you so much in advance for your time and support.

I look forward to your help,

A hug and a thousand thanks in advance.