cnPilot E410 Poor RF & Speed. also DHCP releasing IP out of DHCP Pool

[Md_Mizanur_Rahman_Pi (Md Mizanur Rahman Pikul)]

Hi,
can you please help me, 10/15 days ago i configured cnPilot E410 & getting Poor RF & Speed regular basis.
latest firmware are updated.

also; getting problems on DHCP.
DHCP releasing IP out of DHCP Pool…

attached photos for your reference.

[Md_Mizanur_Rahman_Pi (Md Mizanur Rahman Pikul)]

[Md_Mizanur_Rahman_Pi (Md Mizanur Rahman Pikul)]

[Md_Mizanur_Rahman_Pi (Md Mizanur Rahman Pikul)]

[Md_Mizanur_Rahman_Pi (Md Mizanur Rahman Pikul)]

[Md_Mizanur_Rahman_Pi (Md Mizanur Rahman Pikul)]