My SO - now plat went to check in - was offered same day change for $25. Ticket purchased today, so should have been zero. She's on an M fare and was offered a buy-up to first as well for what looked like the fare difference to Y.

So I called for her... elite desk upgraded her based on the M fare....

Went to check her in...

When I clicked on the seat assignment (up front), I got the seat map for the back. I went back without touching the seat assignment and got a message that an upgrade was unavailable. After that no buttons on the page worked. Reloaded and tried again without clicking the seat map - everything was then OK.

Guess more issues with the *A transition.