I just spun an instance up using the docker compose file. I did disable the exposed ports for all the services except reitti itself. Is there a specific reason you keep them exposed?
The mail address is not the issue. You can enter any address you want there if you don't care about Let's Encrypt being able to reach you in case of problems (they won't).
Don't be afraid of the logs. You don't have to read or understand every line of them. You have an issue with your certificate? Search for certificate and read the lines above and below to get clues what might have gone wrong.
The console isn't out for a whole month. Indie devs usually don't get dev kits ahead of launch and even if they do it is not a good idea to try to compete with Mario Kart...
I also have several of these as a replacement for some Tuya sensors I added a power supply to because they ate through batteries. The Sonoff not only has a way better battery life, they also feel and look nicer and the readings are far better. The Tuya sensors were all off by several degrees and the Sonoff are way closer to the real temperature. I cannot recommend them enough.
Also: mains powered devices (lightbulbs, smart plugs, zigbee repeaters) will all act as a repeater in your mesh. Depending on your home it might help to add in a few of them. But keep in mind that this will not magically make your existing devices use them. When setting up your network always pair your permanent powered devices first so they can act as endpoints for your battery powered ones.
It made me think of indirect games like Black & White, Dungeon Keeper, The Settlers or The Sims. You can give orders but you cannot directly control your characters / units. If you limit the amount of orders, add a delay / the possibility for an interception or introduce areas where your orders can't reach your hero it could do the trick.
I just spun an instance up using the docker compose file. I did disable the exposed ports for all the services except reitti itself. Is there a specific reason you keep them exposed?