how to recertify my access account with att

Are you referring to ACP?  

As of February 7, 2024, the Affordable Connectivity Program stopped accepting new applications or enrollments. Consumers already enrolled in the program will continue to receive their benefit until funding runs out. Funding for the program is projected to run through April 2024. This date is an estimate and may change.

https://accessatt.solixcs.com/#/recertify

That link does NOTHING!

Doesn't work or doesn't solve your issue? The link works for me.