Ive had a nutaku account for maybe 10 years or so and have spent well over £10,000 on them . I only maybe in last 6 months started to use mods, so I dont think they will hard ban my account.
Even in eros fantasy which I played legitly till there was a mistake by them in the shop where you could buy diamonds / gems. Was like you spent 100 gems but they gave you 250. I clicked that a lot and they banned my account for abusing a bug. They agreed to reset my account and let me start fresh. That was the day i started using mod apks instead as I had to restart from scratch. I still disagree to this day that ban was legit as it was there shop no hacka were used so I was of the mindset of "oh well if they can ban me when I didnt hack anything I may as well use the modded things and just have fun".
This shelter game really didnt have too much content and was buggy but they did have a few good games.