# FAQ

- [Why I cannot send out WhatsApp messages?](https://docs.ochats.io/faq/why-i-cannot-send-out-whatsapp-messages.md)
- [Why I cannot receive incoming message from user?](https://docs.ochats.io/faq/why-i-cannot-receive-incoming-message-from-user.md)
- [Why I cannot search for my LINE ID?](https://docs.ochats.io/faq/why-i-cannot-search-for-my-line-id.md)
- [Can I use Wechat Official Account to join WeChat Group?](https://docs.ochats.io/faq/can-i-use-wechat-official-account-to-join-wechat-group.md)
- [If I saw double tick in Message module, does it mean that my contact has received & read my message?](https://docs.ochats.io/faq/if-i-saw-double-tick-in-message-module-does-it-mean-that-my-contact-has-received-and-read-my-message.md)


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