Você pode tentar entrar em contato com Imigrantes, Refugiados e Cidadania do Canadá (a agência do governo encarregada dos eTAs) por meio de um formulário on-line. Na página da web da IRCC:
What do I do if my application for an eTA is not approved right away?
While most eTAs are issued in minutes, some can take several days to process. In such cases, more information is needed before the application is approved. IRCC will contact you via email and advise you of the next steps.
Check the junk/spam mail folder of the email address you provided on your eTA application form. Some spam filters may block automated emails from IRCC.
The email from IRCC may include a request for:
- additional information or documents, or
- an in-person interview at the nearest Canadian visa office.
If you have not received an email confirmation with an application number within 72 hours of applying, you will need to fill out this Web form. To do so, you will need to:
- provide some basic personal details, and
- Under “Type of application” select “Electronic Travel Authorization”, then “Case Specific Enquiries”.
- Provide as many details as possible about the problem you encountered. It can take us several days to answer your inquiry.
Parece que você já se correspondeu com o IRCC por e-mail (embora verifique sua pasta de spam para assegurar-se de que você não recebeu mais correspondência do IRCC). Mesmo assim, o formulário da web parece ser a maneira "oficial" de "perguntar sobre um aplicativo que demorou mais do que os tempos normais de processamento", então eu tentaria fazer isso se você ainda não o fez.