You should always be careful when typing everything in and make sure that you spell everything correctly. In the case of your password, which is also case sensitive, you should make sure that you give it the correct capital and lowercase letters. If you cannot remember your password, then you should click on the 'Forgotten my password' link. To change your password, first you should enter the e-mail address that you use for your account in the box labelled 'Enter your e-mail address' and then click 'Enter'. You will be sent a new randomly created e-mail that will be sent to the e-mail address that your account is registered to. If you are in the process of updating your account's e-mail address to a new one then you may be temporarily unable to log into your account until the updating procedure has been completed. The reason for this temporary restriction is to ensure the security of your account is maintained. If you are using the 'Permanent logon' feature of your Treat Allergies account then you need to have your web browser accept 'cookies' for this to work.