Staying logged in on Lines app?

Is there a way to stay logged into the lines app? Anytime I go to open it I am having to login again. I am using an iPhone XS Max if that matters.
Thanks for any help. It is annoying now, but will be really frustrating if when I’m at the park I have to keep logging in! I tried to email customer service, but have not received a reply from over a week ago.

Did you email When I had trouble with pictures on the forum David worked with me for days to fix the problem.

Is your operating system up to date? I have read reports of 6s having issues but not updated newer models. My 8 rarely logs out.