This seems so odd. Did the Ukraine FS FEd not like the skater's parent coaching? Was there something politically or morally or socially wrong with the coach?
You should take into account that Ukraine is post-Soviet country, and while it's now quickly moving away from USSR legacy, sport governance and laws are still largely unchanged. Its governance model is a typical for Soviet era top-down hierarchy, where power dynamics and family connections rule everything and those who's on top of this ladder have zero incentives to care about those at the bottom (i.e. skaters). Person on the top of this tree can literally decide who should be coaching where, who gets the ice time and how much and who travels to competitions and who's not. They enjoy this position and power for decades, and the same stuff is happening over an over, while dozens and dozens of skaters leaving sport humiliated, physically and morally destroyed, expelled, banned (they don't give our skaters who decide to change country clearance as long as possible, just because they can), etc.
I hope that explains the context a little bit.
Ukrainian Federation didn't care about the couple at all. They laughed it off when Ivan's coach was begging for accreditation for month prior to the event. They just don't care. Imagine the most exaggerated stereotype you may have about "grumpy soviet old lady" and you'll get pretty accurate image of 90% of Ukrainian Federation. The insult for them was that couple was super stressed at the JWC (due to lack of their coach at the practices) and dared to fire "official coach" (friendly to federation, one that blindly obey the hierarchy rules, but has doubtful personal and professional qualities).
They executing skaters and killing figure skating very consistently for decades. That's how top-down sport governance works, unfortunately.