Pepwave MAX On-The-Go - lost LAN WI-FI connection!

Hello,

I have two Pepwave MAX On-The-Go ( HW 1, FW 6.3.5 build 2763).
I to used it for sream video: first box installed in my offise and connect to Internet via wire connection. Second box are in the field - connected to Internet via 3XUSB 3G/LTE modems.
Both box configured and working perfectly, BUT I got issue with LAN WI-FI connection.

  1. If I use 802.11ng to connect smartfone or/and laptop and On-The-Go box:
  • after 7-10 min smartfone or/and laptop lost conecction to On-The-Go box via LAN WI-FI;
  • connection NOT restored automaticly, need OFF and ON LAN WI-FI at Deashboard.
  1. If I use 802.11na to connect smartfone or/and laptop and On-The-Go box
  • after 30 min smartfone or/and laptop lost conecction to On-The-Go box via LAN WI-FI;
  • connection NOT restored automaticly, need OFF and ON LAN WI-FI at Deashboard.
  1. If I configured WI-FI Cannel manually - issue still present.
  2. If used wire connection - this issue absend.

How I can fix this issue?

Thank you in advance,
Volodymyr