Deco S7 sucks, I hate it.
I bought in December a Deco S7 wifi mesh set (3 stations) and I am very sad to use it.
What saddens me the most is that the devices and their management have been implemented so stupidly (if not even childishly).
Of course, there can be many problems with any WLAN devices and WLAN networks in general. But with DECO S7, it is really difficult to find out the problems when the devices do not have any real control panel.
The devices are activated to use and "managed" with the DECO Android application, which is connected to some TP-link cloud somewhere and which then calls my local deco base stations via the Internet. When a problem occurs (and they do occur often), the program is useless because it is not connected to the decos (because they have a problem and are not online).
Nowadays, you can't live without the internet and my work is online. That's why it's a real shame that such low-quality devices (DECO S7) have so much power over how my everyday life and work goes. The internet can be interrupted at any time for any reason and I have no idea whether it is due to the internet connection, or whether it is a problem with the deco stations or the connection between the deco and the modem, because the decos do not have any control panel to see if they are connected to anything.
I've already learned that it's most likely always the Decos' problems, because they have so many bugs anyway and even that bad Android application was clearly not designed to be used with S7 decos in the first place (because the program has options that are not used with DECO S7, such as e.g. control of LEDs at night, etc.)