Players keep disappearing from my club

Honestly, I'm getting tired of this.

A couple of days ago my Aitana Bonmatí (Gold, 90) just vanished from my Transfer List. Support says she was sold, but my balance doesn't add up and it looks like I never got the coins. They logged it as a "general bug" and that was it.

And it's not the first time. A while back another player disappeared from my club for no reason. I sent all the proof, got told "we're investigating", and never heard back. That one was only around 40k, so I let it go. But it's clearly not normal.

Is anyone else having this?