Worked for me today, but under the following conditions (not sure if starting pass on AS flight is what let it work).

1) Bought in advance ($19 day pass)
2) Redeemed on AS flight from SEA-LAX
3) When I went to log in on legacy VX metal flight from LAX-MCO with gogo, it immediately game me option to redeem same pass. (So much faster than any AS flight I’ve ever had in past few years - was watching YouTube and Facebook videos with no issue).

Note: On step 3, I initially closed out of that redeem pass window thinking it may have been an extra pass and wanted to confirm I didn’t have multiples. From any other screen/page on the site, the “redeem pass” window wouldn’t work right (it would pop up the box but wouldn’t display the actual passes to redeem). Fumbled around a bit, eventually signing out and in again, immediately selecting pass to redeem and presto.