To check if the add-on has been correctly installed, open a new Google Sheet.
In any cell, type in =gorilla_asinlist()
If the spreadsheet loads all your ASIN’s like below, the add-on has been properly installed and added.
To check the progress of your data download, you can view the status by selecting Add-ons > Gorilla Sheets > See Data Status
This test account signed up on April 1. There was no previous history which is why it shows N/A for History Batch Order Update.
For the History detailed order update, it imported everything up to March 29, and then started downloading the orders fresh starting March 30 to ensure a seamless transition with the new account.