Assign Records Created by Guest Users to a Default User in the Org #inSalesforce

Assign Records Created by Guest Users to a Default User in the Org

To increase the security of your Salesforce data, guest users are no longer automatically the owner of records they create. Instead, when a guest user creates a record, the record is assigned to a default active user in the org, who becomes the owner.

Steps:

Setup | Digital Experiences | All Sites | Click Workspaces for the community where changes required | Click Administration | Preferences | Select a default user in the record ownership lookup | Click Save.

Reference: https://help.salesforce.com/s/articleView?id=sf.networks_assign_guest_records.htm&type=5