@dbpierce10 Archer A6 v2 should support WDS feature wich would allow to expand your main router wireless coverage. Here's a guide for configuring WDS. Keep in mind that you may not be able to build...

@Blinkingbee Make a configuration backup (details) and reset the modem to its factory defaults - press the reset button for about 10 seconds. Restore the configuration from the backup and if you...

@sajinala Normally, this particular icon should mean that the device is connected to the "Guest Network" of the router.

@ET13 You don't have to disable DHCP server on any of the routers - this should work out of the box. Cable connection between routers should be ER605 LAN port <=> C80 WAN port.

@ramzinassar According to the RE650 user guide "the Power Schdule feature allows you to specify a time period during which the extender is off". In anycase what you're intend to achive should be...

@mkfzdmr Connect ZTE ZXHN F601 LAN port to BE550 WAN port and set BE550 Internet Connection Type to "Dynamic IP". Test if the internet is working. If this doesn't work check this article about ZTE...