Resetting the account helps to solve the problem temporarily, but after a couple of disconnect this error will come out again. Answer from support: We're currently investigating an issue where the error message "Password or e-mail is invalid" occurs when logging into our website, even if the credentials are correct. I'm sorry about the inconvenience this causes. We really appreciate your patience while we work to find a solution. In the meantime, could you try logging into your account using an incognito version of your browser? Please make sure that any extensions/add-ons are disabled as well. I've seen cases where changing the password and logging in using the incognito version of Firefox or the Edge browser works. If you're still experiencing the same issue afterwards, please let me know more details (including which browsers you tried), and I'd be happy to help troubleshoot it further for you.