Use the following slack (CardHax 2.0, help channel) to get help from the CTF admins on competition day:

Register: https://join.slack.com/t/cardhax30-may212022/shared_invite/zt-19eonnu36-WDF97n1nXGPIqz6K84twGA

Help channel (once registered): https://cardhax30-may212022.slack.com/archives/C03GSUZP01X