I commented in this thread two months ago. For those interested, I still use Firefox for a desktop browser, though no longer my default browser. I have stopped using it for iPhone and don't use my Mozilla account anymore, except to post this comment....
I have the exact same problem as the OP recounts. I have successfully turned off Firefox suggestions in my desktop browser, but there is no way to turn them off on the iOS, and it's not the same feature as "search suggestions." There is no "Firefox s...