With Onpoint you go to the appstore and download ZOOM.
With Rapidtestandtrace.com you go to the app store and download Microsoft Teams.
There are some 50 other sites. You can use any government approved test. Do know iHealth free test expirat5dates were all extended as were almost every other test.
If not sure go to a local testing facility.
Last, in North America and Europe and other places pretty much all tests are accepted by Celebrity. Go to a local test facility and you can be sure the test results will be accepted.
PS - porting in Canada? Don't forget ArriveCAN is required .