Embedded Report, Add Record button not showing

I have a form with multiple tabs onto which I have embedded reports from related tabled. When the relationship was created a Report Link and and Add button are created. I generally do not include the "Add button" on my form as the embedded report has a built in Add option. I also know that on a form, you can specify whether or not to show that built in option.

My issue is that I have an embedded report that isn't displaying the built in add option. I have confirmed: (1) that the form is not hiding this option, (2) that the table allows for new records to be created, and (3) that I have ample permissions to access the table and create records.

What other reasons would cause this issue? As a side note, the form has 7 tabs, each with an embedded report, and this one is the only one not showing the built in add option.

What obvious reason am I missing?