I didn’t use a cantech code. I used the contact Us option on this page, selected my type of application (temporary residence) , since my application is being processed outside Canada I selected yes for “is your application being processed outside Canada” and then I chose the office where my application is being processed.
https://www.cic.gc.ca/english/contacts/web-form.asp#q2
My message was “I submitted my medical upfront along with my SDS application in July but the same have not been updated in my IRCC account. I gave my biometrics in December but till date the medicals are not updated. I wanted to know if this is a technical glitch ? Pfa a copy of my emedical and a screenshot of the status of medicals in my IRCC account as proof. Thank you”