Pairing
If DMs are not replying, confirm the sender was actually approved.
Use this page when the channel looks healthy but messages still do nothing.
The first question is whether this is a transport problem or a policy and visibility problem. If the channel itself is unhealthy, fix transport or auth first. If the channel is healthy, move straight into pairing, allowlists, mention gating, and context checks.
DM access and group, guild, room, or channel access are different layers. A working DM path does not prove the shared-space path is ready, and a failing shared-space path does not automatically mean DMs are broken.
If DMs are not replying, confirm the sender was actually approved.
A healthy bot may still be intentionally quiet in a shared space until it is explicitly mentioned.
Check sender, group, guild, room, or channel policy if mention testing still fails.