Step 1: Go into your chosen tenancy in your tenancy archive https://www.myrent.co.nz/listings/archives
Step 2: Go to Settings
Step 3: Select Un-archive tenancy
Step 4: Choose Un-archive tenancy
Step 5: To confirm this action answer yes to the "Are you sure" pop up otherwise select no to go back to the previous step
This will re-instate your tenancy.