How to switch server in Blitz reforged?

With the legacy blitz I have accounts on two servers, EU and APAC

I made the EU account when I moved to a country where APAC ping was shit. Now my EU account is the default account in the Blitz account management page

Also both my accounts were linked as per WG's guide

However in the Blitz reforged ultra test client it logged into my APAC profile. Is there any way to switch to my EU profile/account?