1, this can’t be changed. The wifi is a different chip/module from the cpu/module that does all the stuff in a p4. Think of it like the p4 being a car, and the wifi module is hooked onto it as a trailer. They do basic communication, but they’re standalone hardware/software. That said, there could be a PC/MAC program that updates both after each-other in one shot over USB/Serial. Not possible from the app (as that only communicates with the wifi module)
3, The emails are not sent through your ISP as an email. The p4 signals the ghl cloud servers and those are what are sending the emails. So your ISP can’t be blocking it - or if they are, then the whole ghl cloud thing wouldn’t be working from your home.
Edit: I’m not 100% (only 99) sure right now if the signaling of the cloud servers is done via http or smtp (later could be blocked by your isp), but will check it later and report back. So take this with a grain of salt for now.