You can simply enter one of the following into the address bar of your browser and then click Login or Sign Up.
rubberstamp.io OR app.rubberstamp.io
*Please make sure to not put “www” or spaces in front of your login link when using app.rubberstamp.io
*You don’t have to make use of the http:// prefix.
Fill in your email address and password or choose “Sign in with Google”.