Custom Reg Form in PALM

Hi, I try to add new custom registration options like in the older versions. But for some reason don’t work, I see de documentation (4.4. Adding Custom Fields to the Registration Page — Installing, Configuring, and Running the Open edX Platform documentation), and the configuration is the same, nothing change. Is this problem caused by the MFE? Is there another configuration to do?

If anyone can help me, I would appreciate it.