ReadyNAS Ultra 2 Plus - Will not save Gmail information for alerts

I have two ReadyNAS Ultra Plus 2's and two ReadyNAS Ultra 2's

Three of my units are using the same gmail acct to send alerts.  The fourth unit will NOT save the contact information.

Under contacts I choose Gmail and enter the information.  It says it saves it sometimes, but then depopulates the user and password field.  Sometimes it says it cannot contact the SMTP server.

The information in the fields is identical to the other three units including the advanced information section.

All four units are running FrontView 4.2.27.  This issue has persisted for a while through several versions.  I had left it set to use it's own "Internal" mail server, but recently I changed ISP's and the "Internal" server no longer works.

I do notice one difference on the screens between this unit and the other three.  When I click advanced options on the three that work, the "From" box is editable, but on the unit in question the "From" box is populated with the Gmail username when I enter it there and is grayed out.  The information in the "From" box is the same as the other three units.

When I enter the information and press apply, on the occasions that is says it saved the information, the logs indicate that the contact information was saved, but it is not.  It depopulates everything except the "Alert Contacts", "Email Provider"

ANY advice would be appreciated - except suggesting that I set gmail to "allow less secure apps" since it is clearly working with the other three units.

Fizix