Hello, raquel-cardama-r.
I'd like to barge in and reiterate what my colleagues shares in this thread.
To view the attached name to the journal entry, you'll have to open the transaction manually. Also, as mentioned by BettyJaneB, the name that you attach on the journal entry is intended for the specific line of the entry. This is the reason why it won't show up on the reports as it doesn't represent the name of the transaction and it's also working as design.
You may want to run the Transaction list by Customer to view the name of your customer in the Journal entry.
You can refer to these articles on how to customize and filter your reports:
Let me know if you have any other questions about the journal entry report. Have a good one.
