In the Deco app, I want to temporarily switch off the 5G network under Wi-Fi settings. After having unclicked the 5G network, I get back and push the "save" button and I get the sign saying "Couldn't save the information. Try again later." - this is always what happens (I have tried numerous times over a longer time period). 

Any idea on what I can do, so I can temporarily switch of the 5 Ghz network and only run on 2.4 GHz?