Unable to change email address.

Hello.  I have access to my my intuit account but when I try changing my email address the page just does a quick reload almost like a flicker and is back with the old email address. 

I'm using Safari ver. 13.1.1 and also tried Chrome Version 83.0.4103.116. 

I have emptied the history, cookies and cache of the browsers and same thing. 

Any ideas ?

 

Thanks.