Att Internet Security can no longer be downloaded

When I try to download ATT Internet Security it always takes me to McAfee site. I had a long call with ATT Customer care + McAfee Customer care, finally found its ATT that needs to fix. This happened 3 weeks back, yet Zero improvements.

Has anyone with ATT fiber able to download Internet Security? 

I tried login via att.net, att.com with att.net account, gmail account.. nothing works. The below URL always takes me to the McAfee site. I've a 300Mbps connection and was able to successfully install Internet security on one of my devices last December.

URL

https://cprodx.att.com/fim/cgate_sso2/download?app_code=DLM