I've just booked a flight for myself and a companion by phone (open-jaw avios redemption). Seat allocation wasn't discussed during the booking; I normally go to "manage my booking" and change the seats we've been automatically allocated.

I couldn't log on to the BA website at all using Chrome, I was just sent on a login loop. Using the android app, I could see I had a seat allocated but my partner didn't. I was unable to allocate one for him, and I was unable to change my own seat - the error message said I couldn't change my seat if the other person in the booking didn't have a seat allocated.

In the end I phoned BA and asked for the seats I wanted. The customer service rep confirmed she'd been able to select the seats for us. But when I look at the booking on the app it's still showing me in the original seat, and no seat for my partner. So it's back to square one. I don't know if I'm unable to change the seats because I'm using the app rather than the website ... but I can't log into the website.

It's so frustrating. I was using the website to investigate the flights I wanted, but as soon as the booking was made I couldn't log in again.

Should I try twitter next?

Have you tried logging in using private / incognito? Often works just fine. When is the booking? I wouldn’t stress out if it’s ages away

Perfect, thanks. I can log in using incognito, and the seat reservations look fine on the website. I probably need to reload the app to see the correct information.

The app sometimes takes longer to update. I had a same day change last weekend which took almost an hour to show up in the app.