Per the instructions:
If you need to restore your status:
When asked “What is your current immigration status in Canada?”, select “Worker”.
AND
If you need to restore your status:
For question 3 in the first section, I am applying for one or more of the following:, make sure you also choose:
Restore my status as a worker
For question 7 In the Personal details
Under Status, select “Other”
Under Other, type in “Requires restoration”
Leave the From and To boxes blank
Follow the instructions exactly. They are counterintuitive, for example, students also have to enter worker in order to correctly have this application routed to the OWP under TR to PR pathway.
Let us know if you we’re able to submit it. Best wishes!