also probably worthwhile mentioning that sometimes i notice when setting a lineup using mobile phone web browser, the reliability of these settings being saved is low.
I have found even just viewing the training on mobile phone and maybe the page doesnt load or something, this resets the training. (and also other things such as lineups etc).
worthwhile mentioning for other people as well, even if its not the case for you.
essentially i try not to set lineups using mobile phone. always desktop.