if your travel is urgent then contact them through ircc webform https://www.canada.ca/en/immigration-refugees-citizenship/services/coronavirus-covid19/passport.html#travel-documentI applied via mail a few months ago. Didn't hear back so I used the webform. One for myself and one for my wife. I received a reply confirming my request for epost but my wife received an email instructing her how to ask for urgent RTD(!). So she sent another webform.
I have not received the epost email yet. Do you think I can send my wife's RTD application along with mine via epost?
however, if it is not urgent, then you will have to wait until they're back to normal processing