Hey @Roccocomarketing, one thing you can confirm would be checking if the List it is connected to in Klaviyo has the Double-Opt In settings turning on.

If that is still selected, it will prompt your new opt-ins to confirm their subscription before appearing in your list and receiving communications. Turning that feature off will then result in them being added to the list right away.

Here are some more details on it here and how to adjust the settings for it:
https://help.klaviyo.com/hc/en-us/articles/115005251108-Understanding-the-double-opt-in-process

For the name of the user, make sure your mapping of the opt-in form is correctly syncing with the Klaviyo fields you’d like and that it is not an optional field as well if someone may be skipping filling it in.