I will waot for 5 days, if no update then i will submit webform. Meanwhile, i will call IRCC to check update on the file.Attach your oath form to webform if you worried they won't acknowledge your email. Webform they cannot ignore.
I am not sure why it takes so long for Clerk to release the e- certificate? I mean even clerk initial is not provided in the email subject line then they can still search the email by last name or file number and get the signed oath form, assuming all the email goes to one general inbox for all the clerks to collect the oath form.