Password not working on site but on game?

daystarr

So I have a main account, which I have barely ever used to come on the site.
However, I play the game nowadays with said account, but when i put the info on the site, it never works.
I also don't remember what email it was for, as I created it a long time ago, and i hadnt had wifi until a month or two ago.
I can provide the username (Daystarrdesu). my password doesnt work, for some reason.
Any help is greatly appreciated.
Thank you.

]Sake

I have 7 accounts in total and can log in on the website with only 2 of them (while I have no problems playing with them). I have also asked about this before, but noone answered.

All accounts have a clear history, so that can't be the reason why I can't use them here.

daystarr

I have multiple accounts, all of which can sign in EXCEPT for the one I use to play Crossfire.
Ugh. This is really stressing me out.