Apple watch app not working

While using the SimpliSafe mobil App on my Apple Watch Ultra:
My Apple Cellular Watch Ultra appears to be dependent on my Apple iPhone 14 Pro Max, causing me to occasionally open my phone Simplisafe App to refresh the App on my watch.   This prevents me from leaving my phone at the house, making my watch unusable for the App.  I can't even use the Watch App while in the backyard if I need to occasionally refresh my phone.  Once refreshed the watch is no longer dependent on the phone for a various period of time, works great.
I just spent several minutes with Apple Care and SimpliSafe technical support.  We unpaired the watch from the phone, removed the App from both, and reinstalled the Apps on both, no luck.  If I understood the SimpliSafe tech correctly he believes the watch is dependent on the phone, causing the problems I mentioned above.   If in fact this is true I beg for a fix to be made, allowing the watch to access the SimpliSafe App independently.     
Any help would be appreciated.  
Thank you,
Craig

After reading post from others this appears to be a problem for the last 2 years...    surely it is fixable!       Please fix it.

@craigharryman​  I have the same issue.  Watch opens and "pretends" to let me disarm, but never responds and I do not get notifications.  Walk up to the door and it is still locked (unlocking is part of the disarm).  Open the app on my phone and magically I get a notification that my system is "disarmed by remote" and it unlocks. Something is not right in the interaction between watch and phone.

@jwmeyer35076​ and @craigharryman Thank you both for reporting this! Your cases have been forwarded to our engineers for further investigation. 

Hi @gthomas000 ,

SimpliSafe on Apple Watch is a companion app, which means that it's a remote control for the SimpliSafe app on your phone, and needs the phone app to be active to function. So if you've recently rebooted your phone, force-close the app on your phone, etc., you may just need to launch the SimpliSafe app again and make sure that you're logged in. Unfortunately, the companion app is also not able to function if your phone is not within bluetooth range.

You can read more about Apple Watch functionality on our Help Center here.

That is certainly NOT the issue here.  On a given day, with the app never closed, the watch will only work about 60% of the time.  The watch never gives me an indication that it is not going to work.  It opens, updates for current state, allows me to select disarm and then falls back to the app selection screen native to the watchOS.  After hearing no notification, I try again and get the same results.

When I get to the doorstep my door is still locked (set to unlock when disarmed), I pull out my phone and open the Simplsafe app -  It's logged in and has not been "force closed" - I do not select anything and all of a sudden:  a notification that the system has disarmed by remote and the door unlocks. 

@jwmeyer35076​ your symptoms do confirm a little bit how the companion app on your Apple Watch works, because it needed to have the app on the smartphone side to be launched before the command would work.

iOS uses smart memory management, where it keeps more recently or more often used apps active, while suspending those that aren't. So I think what happened is that it had been a long enough while since you last used the SimpliSafe app on your phone that it had gone dormant.

This is definitely something we'll report to our dev team.