Don't miss the forest for the trees. This isn't about specific version of RenPy 8, it's about the combination of any version of late RenPy 7 and/or RenPy 8 along with SanchoMod. Android does not support emulation nor can it process Win APIs (Application Programming Interfaces), this has always been a Google problem, they refuse to address it. JoiPlay does NOT emulate Win so it cannot process APIs either (as stated on the main page of their website clearly):
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So, the operating system (droid) is the root of the problem, not RenPy, not me. If SanchoMod was a simplistic mod with no features (green text choice is best choice type of bullshit) then all would be fine but I can't pull off the feature sets I offer without API assistance, especially in regards to GL2 which is mandatory. If you're game on rewriting GL2 to work on Android while "learning coding & writing" then please, be my guest. It will be no easy feat though with Google working against you.
That should give you some base info to look into if you desire. For the meantime (until I resolve the issue) SanchoMod and droid are not compatible, use a different OS. Regards.