Query : Residency Fees & Bank Draft in $CAN from a UK Ba

[ESCO]

Permanent Residency Fee (RPRF)

I wanted to pay by Bankdraft in Canadian Dollar from a UK bank.

Got confused when I saw this "We do not ACCEPT Canadian dollar drafts drawn on banks outside of Canada"

What does this mean? Does it mean I cant get a bank draft from the UK Bank in Canadian Dollars?

Any advise/experience would be highly appreciated

Regards