Seems odd that she traveled internationally all off-season without issue. If it's a document issue it makes her team look bad that they didn't make sure everything was in order before competition season - even if its a matter of 1 line being filled out weird, what if border control/customs didn't notice it till the GPF or Europeans where it costs her a major medal?
I will say had she performed well at test skates I don't think anyone would be making much of this, but since she performed poorly and was filmed crying in the corner of the arena - it makes it look very fishy.... But thanks Russian figure skating, we probably needed a bit of gossip to hold us over a few weeks till the GP series
Border control / customs are weird.
Just from my own experience, i seen the following things happen:
1. stamp passports with wrong date
2. accept passports that are not valid anymore (hi, russian border control, last year i traveled with my old passport by mistake and you people still took it and didnt even blink)
3. deny entry for weird and / or fairly illegal reasons (i got entry denied for reasons such as another border control stamp my passport wrong, or for wearing a bloodstained shirt after some luggage fell on me on the plane causing a major nose bleed, hi UK, I still hate you people for not letting me go out and use my insurance)
4. nearly deny entry over crappy handwriting (i filled in some numbers, and appearently my 9 looks a lot like 4, though nobody complained of it before).
5. Not looking at stuff at all (i just found out that i basically spent all my teenage years traveling around with the parental consent docs invalid, since my dad signed them only once and then i used them for nearly 10 years, while they had to be renewed every year lols).
then there were tons of stories in this thread of weird border stuff.
Those folks sometimes just pick on some weird stuff, and it is very hard to change their decision, since you just have so much time until your flight, and complaining can make things even worse.
what likely happened is that they didnt like something at the parental consent paper, and then she could either try next day to see if they let it slide (which could actually happen, but no guarantees) or WD. Since it was pretty close to the event, her team chose to WD which is the safe option.
As for crying in the corner of the arena, yep, with all the pressure, with TAT and many other folks being mean about her, with all the zhenya banners and not a single one alina banner on the rink, i am not surprised she was upset.