Please note that in order to create an app, you need to have a developer account. Just request it and wait until Twitter approves your account application.
Type your app name (you can use your shop name):
On the next page, you'll be provided with the API key and API secret key. This will be the last time the API key and API secret are fully displayed so you need to copy them.
2) In order to allow this application to be used to Sign in with Twitter please enable 3rd party authorization:
Enter https://growave.io/lite2/auth/twcallback into the “Callback URl/Redirect URL” text field and your online store URL into the “Website URL”. Click the "Save" button. Please make sure that you have correctly typed your online store URL:
3) Edit the "App permissions" section and select the "Read" then save changes: