I can't change the region and add a phone number

Hello all those who faced the same problem as me, I had a region of Kazakhstan and tied Kazakhstan phone number, I moved to Germany for 3 years, I played for 2 years and even forgot about the website and everything, but recently I bought Battle Pass, and went to my profile on the site and noticed that I have a region of Kazakhstan and tied number that I no longer belong to, for security reasons as I thought, I untied this number and wanted to tie a new German number, but I could not, because it was impossible to change the region of the number there is. I could not change the region of the number there is +7, and my number begins with +49, and I also can not change the country, I wrote to technical support, or rather in these tickets that do not load at all, I do not understand whether my messages reach them or not, I see 2 old tickets, it says that the status of Resolved, and what? They did not change the region anything, why the ticket was closed, no answer absolutely nothing, what should I do now?
Plus another problem is that I can’t even link any Kazakhstan phone number because it gives an error.
Please enter a post-paid phone number, I tried so many numbers of my relatives, none of them fit, it’s surreal.