I received an invitation but I can not join the team
The email you used to create the account and the email your team used to invite you need to be the same. If they’re not the same, log out of the account you’ve created and click the invite again to create a different account using the email address your team used to invite you.
If you already have the account, just log in and hover over notifications. You should be able to see and accept the invite from there.
After that, hover over your profile image and switch to your team’s workspace (or go to Workspaces and activate your team’s workspace so you can start tracking time for your company).