Could you tell me how to get the serial number

939967268

Could you tell me how to get the serial number

求各路大神告诉一下，怎么获取序列号

Richard Haseltine

It should be here https://www.daz3d.com/downloader/customer/serialnumbers

The dialogue box you show just requires some text in the Name box. Daz Studio will not let you use File>Save without asking for a filename unless the Name entered here matches the name of the file's author, so not entering anything would be inconveinent. This is a feature to prevent accidentally over-writing content files.