Does Paypal know that its spelling of 'cancelation' (referring to invoices) is wrong? How do I/we notify them? Both canceled and cancelled are 'correct', e.g., but cancelation is not. Witness (emphasis added):
From Google Dictionary (questions):
Canceled or cancelled is the past tense of the verb to cancel. Both spellings are correct; Americans favor canceled (one L), while cancelled (two Ls) is preferred in British English and other dialects. However, there is only one correct spelling of the word cancellation, no matter where you are.
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