So I misunderstand the rules and I was trying to do a prohibited thing? Now I'm sad.. It wasn't my intention. :/
Sure, better wait for an official response.
My smartphone is a Xiaomi Redmi 6 and it runs two Pokémon Go at the same time (but I don't do it because it's a pain level up a account in this game for me, two accounts would be too tedius, I did it just to test my smartphone's hardware at the time). I also splited other apps without any crash or glitch, the splited apps just lack a few optimization 'cause these apps wasn't made to being splited, but I had no problems with performance at all, it runs everything I tried flawless so far, I'm sure top notch games like PUBG would lag my phone if I would try it, but I have no interest in games like that, I prefer simple graphic games like PokéMMO or anything retroarch can emulate for me.
Some apps runs on background and those I can play with splited screen and PokéMMO would be one of that, there's no freezing like apps that stop automatically when not focused. Both splited games runs at the same time like Pokémon Go but just the second can't be configured. Now you mentioned that could be not allowed, I wonder if this is happening as a defensive way to avoid me doing this.
Ok, I would agree with your point that this would allow people to do some game breaking abuse, but I only want to login both accounts when I have to trade, it's insane play both accounts literally at the same time simultaneously, with the squeezed gamepad on the screen. I would play the accounts in turns in the majority time like I did with My Boy/My OldBoy emulators.
I have no interest to interact with other players that I don't know in real life. This game have three regions, and this seems interesting to me have this kind of experience I hadn't before in main game series. If the official response won't allow me to do this, I'll respect and give up this ideia.
I don't have any intention to break rules or make any gameplay abuse, if this is not allowed I'm going to back for the emulators and search for different gameplay in romhacks.