@tlkounev You didn't miss anything - BE800 just doesn't have any backup connectivity implemented - here's its user guide. The backup connection feature is implemented only in their 3G/4G modem...

@SabbirLeon If you don't use the mesh feature better turn it off - this way you'll get a lower wireless interference around you.

@Dhafer this thread You need a RE with High Speed mode feature - check this thread for more details on that. Here are some application scenarios when using dual band range extenders (check...

@Subsea For configuring the WR802N in client mode you should follow this guide.

@ChrisKz Zyxel ex5601-TO is an Integrated Access Device (IAD) router - It integrates various communication services, like voice and data. ex5601-TO has 2x POTS FXS ports which BE550 doesn't have. I...

@BVC That's most probably because TL-WPA7617 doeasn't support Easymesh with an ethernet backhaul - it only supports Onemesh (details).