I'm trying to send the client a message, but when I tap on the text field it won't let me enter anything. Why?
Conversation sessions are limited to a 24 hour timespan.
After 24 hours of inactive chat, WhatsApp requires businesses to use the template feature to initiate conversations with customers. These templates are approved ahead of time to make sure they’re transactional in nature and are not cold messages or promotional/advertisement messages. If you tap the template button, you'll see a list of messages that you're able to send to the customer. Tap the message to select it, then press the send button.
When the client opted out, they received instruction about how to opt-in again. Your client only needs to reply with another message opting in, usually “yes”. If the client replies to the conversation with any other message, a new opt-in message will be sent to the user.
Why do I see “The contact hasn't responded to the opt-in request for more than 24 hours. You can try sending the request again.”?
In order for you to message with a client, they must accept your opt-in request. You’re allowed to send a new one every 24 hours. If accepted, you’ll be able to message with the customer. If it’s rejected, we’ll let you know, and you won’t be able to send any more opt-in requests to the customer.