my iMessage app is logging me out on my macbook

Hello DianaMen,

We see you need help with your iMessage logging you out on your MacBook after a short time. The first goal will be to narrow down the issue a bit.

• Do you get any errors when this occurs?
• Are you typically connected to a home Wi-Fi network, or a public business one when this occurs?
• Do you get signed out of anything else?
• Are you able to easily sign back in without issue?

For many issues, restarting your device will often help.

Shut down or restart your Mac

You could also test for this issue while booted to safe mode. This will help rule out possible macOS issues overall: Start up your Mac in safe mode

We look forward to hearing back from you.

Warm regards.