You can send back an email, thanking them for confirming your eligibility, and asking politely, if possible to provide details on logistics (venue, time) or ask if you should be expecting another message from then with more details. Kasi hindi pa nawawala ang art of letter writing dito, lalo na sa Maritimes, so a response from them can be followed up by an acknowledgment or Thanks lang. It also serves na confirmation na natanggap mo ang reply nila. Does not hurt to try.
Then at least malalaman mo kung auto-response.
(Sometime ago me announcement na din na na changes to the scrutiny ng immigration applications will be done by auto-algorithm, pero wala pang balita kung kelan implementation)
..../atb