I came across an issue recently where the merge tags from the admin notifications in Gravity Forms were coming out blank when the email notification arrived to the inbox.
Also, the email was not being inserted into the entries section of Gravity Forms.
This situation can happen for two reasons:
- There are some gravity forms table missing in your database
- Some of the tables in your database are corrupted.
If there is table corruption, just whip open phpmyadmin and repair the tables.