I have a profile setup for profile "Data Entry / Estimation"

For this profile, I want them to have read access for all Accounts, so they can reference them when setting up deals; However, I also want them to have Read and Write Access for one specific field, the "SAP Payer Code" field.

As you can see in the image below, I have set the "SAP Payer Code" field to Read and Write for this profile. All other editable fields are set to Read Only under this module for this profile

Under the Profile Setup, you can see that the Accounts Module is set to "View Edit" - so you would think they would be able to edit the SAP Payer Code field

For good measure, below is also a screenshot of the Data Sharing Settings for my accounts module... as you can see nothing is there that should hinder the profile "Data Entry / Estimation"

In the image below, you can see that the "Edit" button in the top right corner is misssing for this profile for the accounts module, and also the "SAP Payer Code field in the bottom right is not able to be edited from this screen using the profile  "Data Entry / Estimation"

Please advise on what I should check to diagnose this issue

Thanks