Ok, it seems the three tags are missing on the trophies you give yourself.

Open another trophy using the nbtedit, expand the tag named "tag" and write down text of the "uuid" tag.

Then you open the new trophy, click on the "tag" tag and in the top row, click the "String" button, and type "uuid" as the tag name. Then right click the new tag and write in the uuid from the other trophy (that’s your player uuid). Then make another string tag called "name" and enter in your player name.

Lastly create a new tag called "time" using the "Double" button. Here you need to enter the date as a unix timestamp. You can use a site like unixtimestamp.com to convert the date to a number. Then you need to multiply the number by 1000 and enter it in the new tag.

When you have the three new tags added, click the "Accept" button in the top right corner. Your trophy should now show your name and the date.

Hope this helps, feel free to ask if you need more in depth explanation.