Simppler uses a unique token login system, such that when you sign in, you can stay signed in and not have to keep remembering a login/password combination. It's important that you don't forward your login token, and remember that once used, you will need to generate a new token to log in.
If you're receiving the above error when attempting to login to Simppler, follow these steps:
1 - Go to www.simppler.com
2 - Click Sign In and input their @work email address. This will email you a new link specific to you.
3 - Check your email and click on the new link.
Afterward, you won't need to log out or sign in again. As long as you don't clear your cookies or sign out, you can visit simppler.com and you'll already be logged in.