How to open a european unified account

Hello,

I wanted to open a european unified seller account but somehow I opened a north american unified account. Seller support than added Europe to this account however they added UK as homemarketplace which is not correct in my case because I want to do EFN from Spain. Than they said that they can´t change the homemarketplace.

Finally they advised me to open a new account.

My concern is that I keep getting redirected to the North american (US, MX, CA) amazon seller registration page (or at least that´s what I suspect)

I start registration from here:

And I end up here:

https://sellercentral.amazon.com/a/signin?openid.return_to=https%3A%2F%2Fsellercentral.amazon.com%2Fsw%2FGREX%2FSignUp%2Fstep%2FAgreements%3Fpassthrough%2Faccount%3Dfba_soa%26passthrough%2FmarketplaceID%3D3DA1RKKUPIHCS9HS%26passthrough%2FsuperSource%3DOAR%26ref_%3Dsces_soa_wp_rp_h%26passthrough%2Fhttps%3A%2F%2Fsellercentral.amazon.es%2Fgp%2Fon-board%2Fworkflow%2FRegistration%2Flogin.html%3Dundefined%26passthrough%2FinitialSessionID%3D262-9681819-7421015%26passthrough%2Fld%3DSCHelpESSOA-footer_UA%26productTier%3DFBA%3ASILVER%26productType%3DFulfillmentByAmazon%3ASellOnAmazon%26marketplaceId%3DA1RKKUPIHCS9HS%26forceGrex%3Dtrue%26language%3Des_ES%26redirectAP%3D1&openid.identity=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0%2Fidentifier_select&openid.assoc_handle=amzn_sw_signup_us&openid.mode=checkid_setup&language=es_ES&openid.claimed_id=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0%2Fidentifier_select&openid.ns=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0&ssoResponse=eyJ6aXAiOiJERUYiLCJlbmMiOiJBMjU2R0NNIiwiYWxnIjoiQTI1NktXIn0.HeSOdIMLp7tHyEw12VTDZxlgqM2q25LzozKz9vi1M5JMV49D5c-rQA.Q6Skyl6syqgENHtx.DcyuLSsEec7RFEt2-QC58YJoJk5WxmaXQPvfk1xwmDH1H3ANUHhuqVa0qPdK2h-In2J8XEpPKA2QzUeBD_H84xDdEpyBPUTjqvn74OGcYasfyDHsT0WYlkzLNJoeIPgAuDssKEVbnJVw3Te5d4SDMG8oRePhfWNSy6-A0go_6yMDe0peypQHtJG14YyPExLCP3zVLibURFVzO8qwIIH0YICnoSTT-16bzpBKPIyk3UKSck_04Gsge9NjHMjiQPqcVA.iKSDVPpOCD2kYMXHahf2dg

When I´m asked for the vat number in this form they don´t use the european spanish term (CIF), they use the mexican term (RFC). This confuses me a lot and I think that I´m registering again for North America.

I also tried some troubleshooting steps:
-deleted cookies
-checked other browsers
-checked from other computer

But I always get the same registration page. It is so confusing that I end up in the “.com” domain. Shouldn´t I end up in the amazon.es domain?

Seller support confirmed me that it´s correct but I did the same process at my first registration as well and I ended up with a north american account.

Can someone advise me regarding this? How could I make sure that this time I get the registration right?