RB411AH - TP-Link WR743ND

RouterOS Wireless Networking
1

Hi,
RB411AH, 2.24, 3.02 - AP Bridge mode, WEP 64
The customer TP-Link WR743ND 3.14.2 Build 120727 Rel.56815n
When the MT mode is b / g / n client is connected normally. When the mode is only N does not connect.
When I use UBNT always client is connected normally.

Please help me.
Zwirek