TheTrainLine app not working

I used the Trainline mobile app and booked a return from Liverpool Lime St to Euston going out Monday, back Tuesday. Outbound, I showed my activated ticket to the Virgin guard at the Virgin-dedicated barrier but he insisted on scrolling to the return ticket screen and he wanted to activate that, too. I protested, as the return trip wasn’t until the next day and, if activated, would have rendered that ticket invalid on the day I actually wanted to use it. But the Virgin guy wouldn’t let me through until the return ticket had also been activated! Crazy. He actually leaned in to my phone and pressed the ‘activate’ key! Of course, the next day when I got to Euston for the return trip, the ticket was invalid because it had been activated the day before and was considered ‘used’. I had to pay another £86 to get home and I’m still fuming. I don’t understand why the Trainline app doesn’t work off the barcode. That is, UNTIL that barcode has been scanned, the ticket is valid. The Virgin guard would not have been able to do this, because the barcode would be day-specific. As it was, as soon as that ‘activate’ button gets pressed, that’s it, and how many times must people do this accidentally? I now face a lengthy battle to get my money back. Not the Trainline’s “fault”, per se (that’s 100% on Virgin), but the app is fundamentally flawed in this respect. Phoning the Trainline “helpline” from Euston was a complete waste of time – they said there was nothing they could do, not their problem, etc. I will never, ever, use an app for any kind of ticketing in the future. I thought I was saving time by using the app. Instead it’s landed me in debt. BEWARE!

App asked me how I felt it was working. I clicked great. It asked if I wanted to complete survey. Clicked not now. Screen froze shortly afterwards and it has stayed frozen. 5/4/17

Iphone 6Plus, for some reason for the last month my i phones been crashing regularly and I could not fathom what was causing it, really drilled down into the phone to find the problem, and it looks like the train line app is regularly accessing the net and causing massive problems. Even when I uninstalled the app it was still accessing the internet, and I had to reset all my settings to correct it

Unresponsive. Updated to latest update, uninstalled, reinstalled. No luck. Crashed just now.
iPhone 6s+, all other apps are fine.

The IOS app hasn’t worked for about 2 weeks. Probably after an update. Cant get past the home screen. I use this regularly and they are missing out on business.

Since both my sister and I have processed our IOS phones on the 10th update, we have experienced some issues with your app. Namely, when we tried to purchase a ticket from one station to another and chose our time frame that we were to use the trains, the app refused to show us available trains leaving the station at the time requested. We even tried tapping the icon ‘Earlier trains’ and it showed us train times from the day previous to the one we had picked. I will say this was happening yesterday too; on Sunday 16th Oct and continues to seem faulty today.

I cannot use Trainline app since last update, does Trainline care, or are they aware, or are they not bothered. I have ticket information stored, tickets to collect, seems like a poor reaction by there customer services,