Problem to submit my 2022 taxes returns

Hello,

 

I am living in Denmark and I am trying to submit my 2022 taxes returns by fixing a schedule with an agent. 

The problem is that I have a danish phone number which isn't accepted in their system. 

I can't go further to my application and my plan do not allow me to call a phone number starting by +1 800... So I can't get their support service.

 

Could you please help me out?

 

Thank you,