FAQ# Mobile App# How to install the GREEN-API app on Android?# WhatsApp features# What are the features of sending and receiving messages to numbers of different countries?# How to text on WhatsApp first?# How to set up device pairing?# How to display company name and logo in chats?# How to format text and use control characters?# How to send emoji or other symbol via the API?# How to run a VBA query?# How to confirm the security code in WhatsApp# How to use polls as buttons?# How to use a proxy server in WhatsApp?# How to transfer your WhatsApp account to another phone?# How to use the click to chat feature?# How to make links in messages active?# What are the statuses of messages in WhatsApp?# How to identify your WhatsApp subscribers?# How to get a green check mark in WhatsApp?# How to protect personal data?# How to register phone number on WhatsApp?# How to log incoming calls in WhatsApp?# Working with files via API# How to send file by sendFileByUrl method using external storage?# How to send a file?# What file types does the API support?# WhatsApp Errors# Why are incoming notifications slow (webhooks)?# What to do with the error "WhatsApp is temporarily unavailable. Try again in 1 hour."?# Why can not I connect the device to the API?# What to do when receiving yellowCard status?# Why is logout happening?# Why messages are sent slowly?# Why is the message status "sent"?# What to do when receiving the error "Maximum number of devices connected"?# Why does the SWE001 error often occur?# Why are members not being added to the group?# How can I prevent a QR session from being permanently disconnected?# How to determine if WhatsApp has unblocked my number?# What to do when you receive a "Message Waiting" notification?# Why can't I download or update WhatsApp?# Account blocking# How to protect number from ban?# What to do if your instance is locked?# What to do if your number is blocked?# Why is re-blocking happening?# How to make mailings without the risk of blocking?# How to implement mailings via CRM?# How does the use of the WA Business application affect the risk of blocking?# Is there liability for messaging on WhatsApp if Meta Platforms Inc is prohibited in Russia?# How to determine if whatsapp has unblocked my number?# What types of blocks can WhatsApp impose?# How my WhatsApp number is protected from blocking?#