Out of memory on a t2.micro (1 GB RAM)

Hey every now and then our ec2 instance crashes with a out of memory issue.
Any idea if there might be a memory leak or something?

Using the latest version. With only a few devices connected ( approx. 10 )

Here is a little bit of the log that i get from journalctl:

May 03 06:30:34 systemd[1]:  **snapd.service: Watchdog timeout (limit 5min)!**

May 03 06:30:34 kernel: oom_reaper: reaped process 5731 (openvpn), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB

May 03 06:30:34:  **Killed process 5731 (openvpn) total-vm:52056kB, anon-rss:2504kB, file-rss:0kB, shmem-rss:0kB**

May 03 06:30:34 kernel:  **Out of memory: Kill process 5714 (node) score 464 or sacrifice child**

There are no know memory leaks, but 1GB of RAM for an open source instance is very tight. We would recommend at least 2GB.

Ok thanks. Upgrading instance now.