Hi @corequattuor-5090 ,
Glad to hear this issue has been resolved!
Thanks for the sharing.
However, due to a recent update in forum policy, the question author now is not able to accept their own answers.
So I have written a brief summary of the solution this issue. Please feel free to accept it as the answer, which would benefit others who also has similar issues in forum.
Issue:
The auto complete feature for my personal email will not work. Works fine for any other new or old address I have sent.
Solution:
If I change the first name to something different and use same email address it will show up.