Stuck with "Wrong Password" Error Adding AT&T Email to Phone? Here's Help!

Hy,

I'm having trouble adding my AT&T email to my phone! I've tried on both iPhone and Android, following AT&T's instructions, but keep getting a "wrong password" error even though I know it's correct.
I've attempted both automatic and manual setup, double-checked the password, and even disabled some phone security features, but still no luck.

Anyone else facing this issue? How can I get my AT&T email working on my phone?