Connection problems
The connect page says ChatSyncs did not accept that key
The connect page says ChatSyncs did not accept that key
The key was rejected by ChatSyncs itself, so it’s wrong, expired, or regenerated since you
copied it.Go to Control Panel → Developer in ChatSyncs and copy the key again. Take care not to
include a trailing space — that’s the most common cause. If you regenerated the key
recently, any older connection stops working and needs reconnecting with the new one.
Claude says the connector failed to connect
Claude says the connector failed to connect
Check the URL is exactly
https://mcp.chatsyncs.com with no trailing slash and no typo.
Then try removing the connector and adding it again — this restarts the process cleanly.The connection worked but there are no tools
The connection worked but there are no tools
Restart your AI assistant. Claude Desktop in particular only picks up a new connector’s
tools after a restart.
I was asked for my key again
I was asked for my key again
That happens if the connection was revoked — usually because the API key was regenerated in
ChatSyncs. Paste the current key and it will reconnect.
Messages not sending
The message was rejected and mentions a 24-hour window
The message was rejected and mentions a 24-hour window
WhatsApp only allows free-form messages within 24 hours of the customer last messaging
you. After that, only an approved template is delivered.Ask the assistant to send a template instead: “Send them the re-engagement template.” If
you don’t have one, create it in ChatSyncs — see
Creating a WhatsApp message template.
Subscriber limit has been exceeded
Subscriber limit has been exceeded
Your plan’s contact limit is full, and messaging a new number would create a new contact.
Remove contacts you no longer need, or upgrade your plan.
The template was rejected with a format mismatch
The template was rejected with a format mismatch
The template expects a header — an image, video or document — that wasn’t supplied. Templates
with variables or media headers often need fields this assistant can’t fill in yet. Send it
from ChatSyncs, or use the API Developer Console to build the exact request.
It says the message sent, but nothing arrived
It says the message sent, but nothing arrived
Ask “check the delivery status of that message.” A message can be accepted by WhatsApp and
still fail to deliver — a blocked number, an invalid number, or a phone that’s been offline.
Also confirm the number included the country code and no
+.Wrong number or wrong account
It sent from the wrong WhatsApp number
It sent from the wrong WhatsApp number
With several connected numbers, say which you mean: “send it from the support number.” To
see them all, ask “show me my account.”
It says this account has no connected WhatsApp number
It says this account has no connected WhatsApp number
The API key is valid but no number is connected to that ChatSyncs account. Follow
Connect your number to ChatSyncs.
It keeps asking which number to use
It keeps asking which number to use
Your account has several and the assistant won’t guess. Name the number once and it will use
it for the rest of the conversation.
Things it won’t do
It refuses to message my whole contact list
It refuses to message my whole contact list
There’s no bulk-send ability, on purpose — see
the tool reference. Use
Broadcasting.
It can't find the agency tools
It can't find the agency tools
connect_whatsapp_account, get_direct_login_url and create_user_login_url are disabled
by default. Contact ChatSyncs support if you resell ChatSyncs and need them.It asks me to confirm every single action
It asks me to confirm every single action
That’s your assistant’s own safety behaviour, not ChatSyncs’. Most clients let you approve a
tool for the rest of a session — check your assistant’s permission settings.
Still stuck
Tell support:- What you asked the assistant to do
- The exact error text it showed you
- Which app you’re using (Claude Desktop, claude.ai, Claude Code)