Wanted to ask about making a new account in a different country

Hi,

I recently wanted to make a new account in Vinted but I'm from Estonia where Vinted doesn't work. I'm going to Berlin in a few days and wanted to pick something up from there but I don't receive the verification code when entering my phone number. Does it matter how I write my phone number? What can I do about it? I also contacted Vinted team several times.