BR2011 beta4 stops after a random time.

I installed v7beta4 on RB2011 to test openvpn on UDP. Apart from openvpn, only DHCP and 10 rules in FW work.

After a random time, the router loses its connection to the VPN (once after an hour, the second time after six hours). I noticed that SNMP is responding and I was able to login from the WAN page directly. The attached screenshots that I managed to do before restarting the router. He didn’t get up after the restart.

I can provide more information after the new year, as soon as I have physical access to the device. Please, let me know what I should send because I am a novice user.
05.png
02.png
03.png
04.png
01.png

Hello, you should send us Supout.rif from the affected device, with a brief description of the problem and your setup. And we’ll take a look at the possible cause for the issue.
https://help.mikrotik.com/servicedesk/