Flyr blocking potential customers from many countries

How can an airline that claims to be international decide not to sell seats to parts of their market based on the nationality of the potential customer phone number.

Flyr have made it extra difficult for people to register for their app or on their website. I am sick of telling them which pictures have dolphins or confirming I'm a human just to come to a page where they want to send a code to my phone number. And even though Ireland shows up in the list no code ever arrives. One wonders how many other countries in Europe or indeed the world this is the case for.

Flyr is very friendly with Vipps, a Norwegian payment service, and Vipps is an upshot of the norwegian bank DNB. I have been in contact with DNB and they confirm they don't send such messages to Ireland and one is therefore inclined to think Flyr uses their service for this. 

One thing is to list countries where you don't actually provide the service. Something else entirely is that the only alternative is to register using Vipps. A service that don't exists outside Norway. Flyr is trying to be more an international airline since they haven't been able to compete in the Norwegian domestic market. This is not the way to succede with that. System security is important but not to the point where it makes it imposible for large parts of the international market to book tickets with an airline struggling with lack of load and income.

For months now I have tried telling them this but either they don't read direct contact social media and comments on newspaper articles about their airline. Or else they blame the potential customer for their registration problems and just stick their heads in the sand so it will take some serious but-kicking from the inside to sort out this customer unfriendly lackadaisical attitude .

Flyr might fly directly to some of these countries but that do not mean that some people in these countries wouldn't be interested in flying the routes they do fly, now or in the future. As a Norwegian living in Ireland I was as late as last summer looking for flights from Copenhagen to Trondheim. Flyr could not be included in my search due to the need of being registered on their app to be able to access their flights and prices. How many others have waited and waited for that registration code that never came. And how many times.