A reset fixes most problems in one go, as long as you act on the email in time. Tap Forgot password on the login form, enter the email tied to the account, and look in the inbox and the spam folder, because reset emails often land there. The link works for a limited time only, so if you open it the next day and it fails, request a new one rather than retrying the old one.
Before you write to support, rule out the usual suspects. The email might be an old address you no longer use, Caps Lock might be on, the reset link might have expired, or a stale browser cache might be loading an old version of the page, so clear it or try a private window. After several wrong passwords in a row we lock the account for safety, and then only a reset or support will open it. Retrying won't help.