Moen 2-Outlet Thermostatic Digital Shower Valve

I first remodeled the main bathroom in the spring 2020. I enjoyed this unit so much that I purchased another one for the main bathroom later in the summer (see images). I did the work & U-Moen install myself.

I bought the valve and its controller about a month ago. The main purpose was to save water using the controller limiting the duration of shower. My son has down sindrome and loves to stay under the shower for a long time. The good news he learned very quicky to operate the shower, the bad news after the set duration he starts the shower again. It would be nice to have a programable recess time to prevent the shower from starting immediately again. Another issue is that after I managed to make the ios app (U by moen) sync with the controller, after some tiem the app got disconnected from it and even I am connected to my created account, I had no presence of the valve or controller; therefore no more control over the shower through the app. I tried several times to make the sync process all over again and the system does everything it is suppose to do, in the controller you can see the messages connecting to the network, contacting the server, but does not finish the process, rolling over to initial settings asking for language etc. In the app it goes through steps 1 and 2 very quickly and some times it reaches step 3, but does not finish the adding device process telling to try again. So even I see the product has great functionalities, its very annoying to make such and investment, and having to face this difficulties.