For those on a Free Trial
You can post up to 5 job postings, but after 30 days all the job postings will be automatically closed. In order to keep the job postings open, you'll need to upgrade to paying plan before your free trial expires
For those on Starter plan and above
There are no limits on the number of job postings you can publish, or on the amount of time they are up.
If you are still having trouble, contact the Wantedly Customer Relations Team here!