Close the game and start again, this is a thing to prevent people who bought the try for free edition, if you’re Minecraft is open for more than 24 hours it will give the message invalid session so you need to restart the game
This is intended (see Minecraft WhatsApp channel)
Close the game and start again, this is a thing to prevent people who bought the try for free edition, if you’re Minecraft is open for more than 24 hours it will give the message invalid session so you need to restart the game