A channel no longer receives messages

Check in this order

Confirm the selected ELChat website.
Check that the channel is always indicated as connected.
Control the account, page, profile or related box.
Send a new message from an external account.
Reload the Hub and check its filters.
Reconnect the channel if the authorization has expired or has been revoked.

Frequent causes

password or policy of the modified external account;
authorization withdrawn from the platform;
page or account not selected after reconnection;
Telegram token replaced;
email box or Google/Microsoft account without the permissions expected;
Filter the Hub that masks the conversation.

See the dedicated channel card for the exact route. Do not activate automatic responses before re-establishing and testing manual reception.