Well, RepheIper keeps switching guild rep bar and always showing zero rep on it.

RepHelper: Status

• Show Mobs [M]: enabled
• Show Quests [Q]: enabled
• Show Instances [D]: enabled
• Show Items [I]: enabled
• Show General [G]: enabled
• Show missing reputation: enabled
• Show extended detail frame: enabled
• Detailed chat message: enabled
• No chat for guild rep: enabled
• Show preview rep in reputation frame: enabled
• Automatically switch faction of rep bar: enabled
• No switching for guild rep: enabled
• No message when switching bar: enabled
• Display paragon reputation in bars.: enabled

I assume that you are in a guild and that you are exalted with it?

Exactly.