Hi there, 

If you follow the steps from this Koodo link you should be able to do it no problem https://www.koodomobile.com/en/help/esim-and-esim-vouchers

alternatively, I’ve found that after you get an eSIM from a Koodo kiosk, you can change your SIM card in your self serve and put in the digits that are provided on the eSIM they give you. From there, go through your respective phone settings to add an eSIM and scan the QR code. I’ve found for me this has worked before as well, but I’d try their recommended steps first as it outlines specific scenarios depending on the line on the account. I hope this helps