Sending gmail email failed due to Authentication Failed

Dear all forumers, I know that access gmail in less secure application need configuration but my personal account not able to access admin.google.com. It redirect me to add administrator account in admin.google.com.

BHYJJExMX2.png (22.6 KB)

I try sign in to admin.google.com using my personal account but it keep on redirect me to the same page without adding any account.

Please help me on this. Thanks.

@peterwkc
We can provide you with solutions to the problems related to our product, email clients but, unfortunately, we can not solve the problem related to configuration on the server side. Perhaps, you should contact gmail support.