It turns out I've lost access to Trackmania2 Stadium unless I buy it all over again. Its one of the games I bought through Steam & when I log on not through Steam, because I can't log on through Steam, it says I need to buy it or enter a key. I entered the key from my Steam version but it says that I have already used that key. It doesn't then recognise I've bought the game already & allow the necessary update to be installed & give me access to the game even though it says I, not someone, has already used that key. It goes back to the option of buy the game or enter a key. Ordinary Stadium, Valley & Storm even though I bought them through Steam work just fine through the not through steam launcher & Canyon I got from Mania Planet & not through Steam anyway.
Fixed by doing as follows:
aspiemum wrote: ↑23 Nov 2017, 22:49 The saved password must have become corrupted some how- it wasn't letting me change it before but I tried again after changing the location of the personal & Common Data files in the launcher & this time it let me re-enter the password. Either that or changing the location of the personal & Common Data files to a custom location solved it. Anyway it let me login using the links in the Steam Library.