because I did not have a "Multi Pilot type" on my licence.
And they are right (according to cap 804).
Before you can take your check ride, you HAVE to have a MPH rating on your license…..
The check ride itself can be combined with the renewal of this type, or with an additional check ride…
Is there any possibility you can re-convert your military license again?
Have you been in contact with the CAA, explaining your situation and asked them for a one-time-approval to do the ATPL check ride combined with the FIRST MPH-rating?