OK, one more update to set the record straight: in my last post, I said that the command referenced in the stackexchange post worked. After doing some more testing, I have discovered that it didn't work for me. The post does have a response saying it doesn't work in Nougat, which is what I'm running. I think I may have had the cellular data off when I ran the command? Turning off cellular still does allow me to connect every time.
I did write to Tascam support describing my experience, but no reply yet. If I get a meaningful response, I'll post something here.
It's fun to finally be able to play around with this thing and use the remote feature. FYI, there is a recent firmware update (2.10) that adds an 'erase format function' that 'might improve write speeds'
and some fixes for the divide function and 'stability'. So far, it's been solid for me. Seems like they might have changed the UI/font since the last version? They posted a new reference manual at the same time, so it's a pretty substantial update.
My next testing will be to see what kind of battery life I will get with the WiFi on using NiMH batteries. I think I read in the manual or in this thread that it will shut down the Wifi if the battery gets low, but keep recording. I typically only check levels for the first couple of songs and then leave them alone. I guess I could turn off the WiFi by feel (the button feels much different than the rest).