❌ BAD NEWS
Plus Messenger does not provide ghost feature because it is forbidden by Telegram API Terms of Service:
"1.4. It is forbidden to interfere with the basic functionality of Telegram. This includes but is not limited to: […] preventing self-destructing content from disappearing, preventing last seen and online statuses from being displayed correctly, tampering with the ’read‘ statuses of messages (e.g. implementing a ’ghost mode'), preventing typing statuses from being sent/displayed, etc."
✅ GOOD NEWS
A workaround is implemented by Telegram developers. You can preview chats & read messages without marking them as read (double tick ✓✓) by following these steps : t.me/TelegramTips/349
Feel free to enable Allow more actions on preview mod to be able to perform additional actions in previewing chat.