I posted about this 2 weeks ago - a mod came over and combined my thread as well as changed the title and everything it was about. They declared it solved several times when 11 pages of responses indicates this problem is NOT fixed. 
For weeks now the Roku Smart home app crashes. It won't connect and gives various errors not just the 1003. Most times it says failed to connect. May 2024 I purchased home security, 2 Doorbell cams, 2 strip lights 4 smart bulbs 3 wired (plugged in) cameras. I already owned 3 Roku streaming devices. I've invested heavily into Roku products never had an issue until the past month, some kind of update happened making the app crash every day or every other day. The only Roku products that continue to work on the app when it crashes are the plugged in cameras. Only the wireless products are affected. 
I've given the mac addresses, I've given the make and model of my phone which is Samsung, I've given the app version 3.2.3 (448). There are no updates as suggested by a Mod. 
At first I was uninstalling and reinstalling every day. Then it began to crash every other day and I figured out that I could log out, wait for the security code to be texted and log back in. It will work for about 2 days or less before I have to repeat this process. When I'm not home this is very frustrating as family member has to contact me for a security code to log in on his phone and tablet.
This means I have to generate 3 codes every day/2 days for the 2 Samsung phones and 1 samsung tablet. I am being charged for the service for home security. There is no way to turn off the required codes to log in. 
Do not combine my thread with others, don't respond this issue is resolved when people are clearly telling you it is not. This is poor customer service.
ROKU you broke the app now fix it. Otherwise it appears you have ripped me off in less than a year on a lot of expensive products with a useless app and charging me for a service I can't seem to use frequently.
Many have given up out of frustration and went to other products. I refuse to do this as I've spent a great deal of money on your products. Fix your app. Its on your end and 1000s of us are experiencing this daily.