If by some reason you need to delete old api key to receive a new one or change the API key, follow this steps at your own risk.

Delete API Key by running SQL Query

• Deactivate the plugin

• Delete the record from the database

• Activate the plugin

After that step, plugin will create a new api key

To delete the record from the database you can run following sql script

Delete or Change an API Key with plugin

https://wordpress.org/plugins/wp-data-access/

Find and open (Explore) table wp_options

Open

Find wp_redi_restaurant_options or redi_booking_options option and delete it or update it manually

Open