frequent_flyer
Registered User
Arizona, USA
The letter is an AOPA "recomendation" https://www.aopa.org/travel/international-travel/canada
That says "another person's or corporation's name". That would not seem to apply to you since you are not "another", you are "the". i.e. you are not flying someone else's aircraft, you are flying your own aircraft.
If you need anything it would seem to be the articles of incorporation showing you are a member of the LLC that is the registered owner. Or perhaps a copy of the original registration application which, I assume, bears your signature.
Are you in phase 1? If so, hope you are having fun with it.