Good morning everyone.
First of all, thank you for sharing the module.
I have been using the x999999 module for more than 2 weeks now and I have not been banned yet, I have tried it in all modes except TimeLine Battle and Otherworld Battle, with this I do not mean that it is completely safe, there is always a risk. As far as I know the bans are on Tuesdays and Wednesdays, if you spend those days then everything is fine.
Information about my device:
Model: Mi 11T Pro
Rom: DerpFest A14
Root: Yes
Magisk: Kitsune Magisk 26.4
With this version of magisk I don't need to use shamiko as it has the option of Zygisk and MagiskHide so I can use any bank application.