Clash won’t let me use account password?

so I just turned on my computer and saw that clash had been released.”Great, cool” I go to verify myself and it asks for my account password. “No problem just did it to enter the lol client.” I type it in. It says “Incorrect password.” I try half a dozen more times and it gives me the same answer. Checked caps locks and restarted it and all that. No idea what the problem is. Please help?