Session cookies should expire approximately every 3 months, or when you manually log out of a website. If you find yours expiring too often, you might need to be careful!
Websites such as LinkedIn are always on the lookout for bots, so they keep a close eye on your activity. If your activity rate is too high, particularly for certain actions, LinkedIn may see it as suspicious and log you out. This causes your session cookies to expire.
To prevent this, we recommend you decrease your activity rate. One way you can do this is by spreading your actions on Phantombuster over several launches throughout the day (during work hours if possible). Check out our article How to set up Phantombuster on automatic and repeated launch if you need help doing that.
You should also keep in mind the rate limits for different websites. Our blog can give you more information on these.