It looks like the issue occurs when transitioning between areas.
In some areas, the trainer's unlimited health option won't work at all.
Well it works fine on my end whenever I tried it.
It doesn't deactivate, it just stops being effective. I started a new game, everything is the right version, and I can't get to the fog wall before stamina stars dropping and health drops with each hit. Trainer then can't be deactivated or reactivated. Reboot, restart CH and Steam and DS3, exact same experience.
Does your game version match the trainer version? Are there any special instructions that need to be followed? Are you running Aurora as admin? Not doing that can cause issues for a lot of trainers. Did you extract Aurora as opposed to just running it? Do you have the newest version of Aurora? Have you reinstalled/verified the game files? Have you restarted your computer before trying the trainer again? Have you set the anti-virus exclusions for Aurora? Are you opening the game from a supported launcher? Are you playing a beta version of the game? Are you using mods?
I'm also having that weird issue of Health, Mana, and Stamina just stops working. And not that it deactivates. The cheat just suddenly stops and turning off the cheat and turning it back on doesn't fix it. You have to close the game and start the game again to re-activate the trainer. I can't predict when it will happen either. Sometimes it will be after five minutes, sometimes after thirty. I will note that sometimes my game does stutter, like it's trying to scan for cheats or something. I'm not sure what kind of anti-cheat software the game has. I have tried starting both the game and aurora as admin and that didn't work.
I'm not sure how many people are really playing DS3 anymore. I feel like most went to Elden Ring and just never came back.
I tested the trainer multiple times and experienced nothing like:
1drv.ms/v/s!AjVaKZ22wuC-hcpnMDoKYqJXl_O_fA?e=vnWRv6
1drv.ms/v/s!AjVaKZ22wuC-hMpF_IcleZFYFgvrwg?e=e15o25
Whatever is causing it is on your side and has nothing to do with the trainer, it could be a software like Logitech or something like that.