There currently isn't a way to pause your account, so here's what we suggest if you need to leave temporarily.
Step 1: Cancel your account
Step 2: Use the same username, email, and password when you sign up again
This will ensure your account remains just how you left it. When you're ready to come back, request an invite here.
NOTE: If you had grandfathered pricing or a special deal, you'll need to sign up at the current rate when you come back.