You can left-click on the email, hold on the email and drag it from the promotions tab over to the primary tab. Releasing the mouse will drop the email into the primary tab. Then click “yes” when Gmail asks if you wish to make the change permanent.
Or:
Click on the promotions tab
Click the Show Search Options in your Gmail’s main search field at the top of the page.
Type @tigacademy.com under “From“
Click “Create filter” at the bottom of the search sheet, then mark “Never send to Spam”