Deleted Gmail address still showing on Gmail app on Fire 8 hd

I have successfully deleted a Google account and associated mail address using my computer. However this address still appears as an alternative on the Gmail app on my Amazon Fire 8hd. The address does not appear on my phone.

I have reinstalled the app, cleared the cache and data several times on the tablet, but the 'deleted address' will not delete from the app.

Any advice appreciated

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