Below are the instructions on how to enable and make sure that Ultimate Cart Drawer can continue to work on your store. Please also read all the instructions below to the very end as there are some additional information around setting up billing that's not mentioned in the video.
If you need any further assistance or customisation, you can email email@example.com
Login to your Shopify Store Admin and click on Apps in the left sidebar.
Click on Manage private apps.
Click on Create New Private App.
For the Private app name enter -
ULTIMATE Cart Drawer
For the Emergency developer email enter the email address you use to login to Shopify Admin.
Click on Show Inactive Admin API permissions
You need to change the following permissions :-
Click Create app
Now leave this page open and in a new tab go to - https://ucd.sellifyapps.com
Click on Click here to setup integration for your private app?
Enter your store url without http:// or https:// (e.g. sellify-private-app-store.myshopify.com).