Is this a legitimate ATT txt message??

I received the below txt message on Sunday 5-28-23. When I clicked on the link in the message it took me direct to my account, but didn’t require me to sign in. Please advise me if the following message I received is a valid txt from ATT. I’m concerned if it’s not that someone may have access to my billing/payment info. 

TXT follows:

“Hi, it's AT&T. Due to a recent change to your account, you're no longer eligible to receive the AutoPay and Paperless Bill discount. Your next bill will reflect this change. To re-enroll or manage your account, go to att.com/autopaybill”