UNABLE TO OPEN MANAGE SUBSCRIPTION AND MANAGE EQUIPMENT PAGE

Your account was likely migrated from the AT&T side to the DIRECTV side. TPG now owns a 30% stake of DIRECTV so AT&T and DIRECTV are now two separate companies. During this process, account management was messed up and thus you are unable to do any of these things. An estimated time for a solution is unknown by us, being we are customers like you. 
If ever you want to manage your subscription or deactivate/activate new equipment, call DIRECTV ( number in my greeting below) and say ‘billing’ to the robot. 

Thank you very much!  This is the most that I have gotten in the past several months.

No problem! Glad to be of help.

What about your subscription and/or equipment are you trying to manage? Perhaps guidance could be given before you call.

I would like to add or remove any premium channels, look at the fees, also reset my equipment like i has in the past, as it stands now, the only control I'm allowed is to pay them.

I assume you mean "refresh" not reset as that is done by pressing the red button. Refreshing service authorizations is done as part of troubleshooting when you are having an issue. You can also post in the forum if having technical problems and perhaps we can help find a solution to avoid calling in, or at least narrow the problem down to streamline your call.

Once functionality is back to normal, you can add premiums online but not remove them. DirecTV has always required customers to call when removing optional services, reducing package, etc. as anything that reduces revenue they want a live agent to discuss.

When you say look at the fees, do you mean the bill itself or something else? If the bill, I agree that should be one of their top priorities with the website migration. Knowing and understanding what one is paying for is extremely important. Good thing is monthly cost is stable. Amount should only be affected if you have any discounts completing, PPVs ordered, made any changes to your account, or for the small annual price adjustment (which just happened).

Unfortunatley nothing we can do to get the website updated any faster. Just have to wait for the migration from AT&T to the new co-owner of DirecTV finishes. Until then calling is what we must do for official support.

@ Juniper, thank you

I'm in the same boat - Signing in via AT&T routes me to DTV - then DTV attempts to link me back to AT&T but it takes me right back to DTV again. Ugh. Calling DTV tomorrow so I can figure out why my bundled services bill seems so high.

@KCrazy 

If you are trying to get a discount definitely say ‘cancel’ to the robot as that sends you to the retention/loyalty department where an agent may be able to help you out.