If you can't set up a new test with a future start date, your account might have reached the limit of scheduled tests.
The number of scheduled tests you can have within your account depends on the type of plan you have. S
If you feel like you need more tests scheduled at the same time, we suggest upgrading your account (Settings (top-right corner) > Subscriptions > Update plan (below the Current plan)). You can choose to downgrade any time should you decide that you don't need so many scheduled tests after all.