Something is not working
Try Support first — the questions there cover most of it. If not, write, and include the device address from the home screen and which channel or film it was. Both together usually settle it in one reply.
Contact
One address, read by people who wrote the thing you are asking about. Say which of the below it is and you will get a straight answer rather than a ticket number.
What to say, and who answers
You sell subscriptions
Licences alongside them, on credit, with codes you make yourself. Tell us roughly how many a month you expect. What a reseller gets.
You bought a licence somewhere
Ask whoever sold it to you first. They can see your device, move a licence to a new device and issue a replacement code without waiting on us.
Something else
A channel format we refuse, a language we have got wrong, a feature that ought to exist. These are read, and several things in the player are here because somebody wrote in.
What we cannot help with: channels. Vortex Player is a player and has none of its own — if a channel is missing, wrong or dead, that is between you and your provider.