IMM 0008 Current Country of Residence Status as Other

[ANDIETO]

Hello, I am sponsoring my common-law partner. He came to Canada in 2018 with a visitor visa (ETA - no stamps at arrival but considering the usual visitor visa being valid for 6 months) but overstayed his visa and remained in the country without status. I am unsure how to proceed.
If I select "Other" for his status and enter "from" the date he arrived in Canada, what date should I enter in "to" (as it has to be greater than today's date?
Also, under "If immigration status is other..." I wrote "out of status" only. I read somewhere that we should add "requires restoration" but the space provided (online application) is not enough.
Thank you for the assistance!

Edit: I just reviewed the guide and it says:

For out-of-status applicants

• for “Status,” select “Other”
• for “Other,” type in “Out of status, requires restoration”
• leave the “From” and “To” boxes blank

So we'll just leave the dates blank but we're still not able to add “Out of status, requires restoration” - should I just leave as "out of status"?

Thanks!