Forwarding ports in Helix Fi app not actually forwarding them

Hello,

I've used my Helix Fi app to forward ports. For some reason, some ports do open and others don't.

I.e. on the same device, I have 9443 open (and showing as such on various online tools) but then 443, 80, 82 and 8221 are marked as open by Helix Fi, but the same online tools are showing them as closed.

Any reason why? I've looked online and haven't seen a mention of Vidéotron blocking those specific ports.

Thank you