@clongatojr and @michelaponti
I need more detailed information to help you.
Custom Fields made with Types allow me to save correctly new values.
Please make sure you use the latest Types Version and that the issue also happens with Types + WordPress Default Theme only.
If then the issue persists, please try to deactivate, uninstall and reinstall/reactivate the Plugin as per this instructions:
https://wp-types.com/faq/how-to-install/
If then the issue still persist:
1. I need to know what sort of Field you are experiencing the issue with
2. On what post Type does it happen
3. Is the Field required, validated or not
4. What is displayed on the Front End if the field is rendered with the Types ShortCode
– Old value
– New value
Awaiting your reply.