What is DHCP normal mode? When should I use it?

In some regions, the ISP modem provides DHCP internet but the router will show Your “ISP's DHCP does not function correctly,” sometimes it’s about the query time frequency of the router, by default, it’s aggressive mode, however this mode will cause some ISP modem to not provide proper IP address to router.

Therefore, you can modify the DHCP query frequency to be in the normal mode.

Go to WAN > INTERNET and find DHCP Query Frequency.

Select normal mode and hit Save button.