Just like to point out that Firesticks are not the best way to do this.
People seem to buy them as the Amazon name is a known thing - the reality is the software on them is stock for approved Amazon-only type apps - and anything else loaded onto it, is by a 3rd party developer - which is a long way from the slickness and features you would expect from say something like a UK Sky box.
People essentially are using these, for something they were never really designed to do! Miss-sold by salespeople, exploiting the Amazon name - to those who do not know better. Not saying they don't work - but if you see the differences between something designed to do the job and a 'hackaround 3rd party app' on a Firestick - substantial, in both performance, reliability and features.
If wanting to use IPTV / streaming type services - any. Then the best starting point is to use a box with the software built in, by the manufacturer, as the user experience is another level - better featured and integrated as its designed to do that job in the first place.
Here's one example of a company that offers this type of equipment.
https://www.formuler.tv/Paul
http://www.televisiontechnology.eu