@Ali_BH When it drops are you getting any errors in the app? One of those errors you could see is below

@rhbmcse If you still had the X50 units hooked up and one of them was set to the main it "could" effect which options and features you had access to. But since all your running is the XE75 I'm...

@extraboi 1. Not sure but according to this post below you can have MLO on or off and still have wireless back haul https://community.tp-link.com/en/home/forum/topic/712050?replyId=1431268 2. Easy...

@Glynard The built in option for switching the main deco "sometimes" work but it has never worked for me. To get my network back up and running I had to do the following 1. Reset all of your Deco...

@rhbmcse So the problem is with the firmware of the XE75 pro and there is a beta patch that is out that fixes the problem but, I'm not sure you can use it with your deco so i sent this post to a...

@rhbmcse I re-read your problem. If you place the decos in router mode instead of AP mode do you have the option?