Hello, For customer who met the same problem, if your Range extender has some problem connecting to 5Ghz wifi of Airtel router's 5Ghz WiFI, please check explanation and try suggestions mentioned in...

@Siena Hello Siena, May I know how about your Sunday Bed time settings, If you set up (previous day), Sun settings will take effect on Sat. Can you share a photo of the Bed time settings? Many thanks.

@Shadowbutton Hello, Thank you for your update, if all the LEDs are still ON on RE550 when issue happens, you could turn on RE's DHCP as the photo attached. I see you have replied the test email, I...

@Shadowbutton Hello, Thank you for your update. You could set different SSIDs for router 2Ghz and 5Ghz bands with 'smart connect' off. You mentioned switching to 2.4Ghz worked fine so we'd like to...

@Criola My pleasure,you too, have a good day~

@Maciej Hello, Thank you for your update,,our senior will follow up your case on the email with Forum ID 261318; I added a note on that email according to your description in this thread.