[SalesForce] Custom Object Section in Account is not Showing Custom Fields

I have Created an Custom Object "Text Subscriptions" And also created a Custom Fields as Account which has Master-details Field type. I have Created some More Custom fields: Text Plan, SMS Number, status, Renewal Date.
I am able to add data into these custom Objects but when it is displayed as a section in Account layout it only shows the Standard Field of My Custom Object: Text Subscription Name(Standard Object). Please check the below image

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Now My concern is, how can i display the rest of Custom fields along with Text Subscription Name in different columns.
Let me make myself clear that this is a sandbox.

Image of Account Page Layout:
enter image description here

Thanks in advance.

Best Answer

There are 2 possible reasons,

  1. Fields not added in the layout

    Edit the Account layout and goto Text Subscription related list. Click on setting icon at the right corner of the related list and add the field which you need

  2. Field level permission not given

    Goto Field setup , check the visibility

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