WARNING
Due to recent change in the Instagram API policy, starting from March 31st 2020 the login option may stop working for both Tanaza and White Label accounts.
In this case we suggest to our customers to remove this option from the splash page.
More info here
Official announcement
Basic API definition and policy
After the recent changes made by Instagram regarding the custom Instagram App, we created this guide in order to follow you on the steps needed to submit the Review for your Instagram App in the both cases on being already existed or on being new.
As you can see from the Instagram Developer website, there have been some changes that you need to be aware, the most important is the one below:

How to create a new Instagram APP
STEP 1
If you already have an Instagram App then you can start from STEP 4, otherwise access to https://www.instagram.com/developer/ and click on "Register your Application" >> "Register a new client".
STEP 2
Compile the page with the following values:
Your Application Name
Your Application Description
In the website field, add your Site URL:
https://splash.YOURDOMAIN
As "OAuth redirect_uri" put the following splash page URL:
https://splash.YOURDOMAIN.com/index.php?action=oauth_instagram_callback
replacing YOURDOMAIN with your current domain.

STEP 3
Before clicking on "Register", on "Security" section keep everything as it is shown here below:

Click on "Register"
How to submit your Instagram App for the review
STEP 1
Now your Instagram App is created correctly, but you need further editing. On your Instagram App box click on "Edit":

STEP 2
Access to the "Permissions" tab and click on "Start a submission".

STEP 3
Fill all the form appropriately:

STEP 4
Be patient. The submission of the review may take some working days.
At the end of this process, write the API key and API Secret in White Label Splash Editor.
NOTE
- Instagram will not email regarding the approval of your App, you will have to check under the http://instagram.com/developer for its status.
INFO
- This guide is referred to the White Label Partners. If you are interested on becoming a White Label Partner please write to sales@tanaza.com.
Related Article:
How to configure the Tanaza Splash Page to work with your custom app