Slash commands work in some channels but not others
If /help and other commands work in most channels but not one specific channel, it's almost always that channel's own permission overrides, not the bot.
- Open the channel's settings → Permissions, and check Iridex (or its role) hasn't been denied Use Application Commands, Send Messages, or View Channel there specifically.
- A category-level override denying the bot cascades to every channel in it unless a channel has its own explicit allow.
If commands don't work anywhere at all, see the bot isn't responding to commands instead.