Yeah, they said they would post more about vexPOLYCUB so I was waiting for that, but I think they are caught with the Maya listing and the Arbitrum LEO. In the end, I decided to contact support as I described in the post, and it was smooth. That's the ONLY option for vexPOLYCUB holders, but if anyone has liquid tokens for the airdrop they should follow the guide already shared by the team.