in my case, i click yes twic,
yes i have a proof
yes, search the database.
shoul i just check it, writ a cover letter and send the same?
I double-checked the application form again. Do not check that box.
You
MUST submit proof of language with your application.
The box to verify in their system
only applies if you completed a LINC or CLIC course.
So you have to get a copy of your test results (even if it is expired) and submit that with your application.
EDIT:
As per help file:
Language Instruction for Newcomers to Canada or Cours de Langue poir Immigrants au Canada (LINC or CLIC):
- If you completed the LINC or CLIC course at CLB 4/NCLC 4 or higher from [...]
... Send a copy of the certificate with your application. If you do not have a copy of your certificate, check the box in question 15a and we will validate that you completed
the course in our system. [...]