TRB140 - Mobile data disconnected (internal modem)

Hi,

As in the topic. Device keeps loosing conncection to mobile data most often around 7 AM. Most of the time it correctly restarts and after few seconds everything works again. But sometimes manual restart is required for it to work properly, mainly problems with OpenVPN functionality.
How can i detect the source of this problem and what to do with it.

log from right before and after loosing connection:

5214 2024-07-10 08:59:39 IP Block ip_blockd service is enabled, initialized firewall rules
5213 2024-07-10 08:59:35 SSH Bad password attempt for root on SSH from 138.197.65.170:49998
5212 2024-07-10 07:04:27 Network Operator Connected to Play operator (internal modem)
5211 2024-07-10 07:04:27 Network Type Joined LTE network (internal modem)
5210 2024-07-10 07:04:27 Mobile Data Mobile data connected (internal modem)
5209 2024-07-10 07:04:22 Mobile Data Mobile data disconnected (internal modem)
5208 2024-07-09 16:13:46 Network Operator Connected to Play operator (internal modem)
5207 2024-07-09 16:13:46 Network Type Joined LTE network (internal modem)
5206 2024-07-09 16:13:46 Mobile Data Mobile data connected (internal modem)
5205 2024-06-20 08:05:39 Network Operator Connected to Play operator (internal modem)