If I forget my password or need to change it, can I do that?

Easily! You can click the 'Forgot details' link under the Password section on the login page (upper right hand corner of the site) You'll receive a password reset link to your inbox and then the rest is easy from there.

or

You can use the link below to get you there

https://www.functionalself.co.uk/customer/account/forgotpassword/