Webservice not working - Cannot change any of Personal data

[loly01]

On the page:https://scgi.ebay.de/ws1/eBayISAPI.dll?ChangeRegistrationShow cannot change: Adresse nor Ort nor PLZ nor Telefonnummer nor Zweite Telefonnummer
Mobilfunknummer nor Geschlecht. When I try to change any of field and press Anmeldedaten Anderen button I get an error "Die Seite kann nicht aufgerufen werden".

I clean browser history and cache also tried on different computer and browsers (firefox and chrome) many times. I think that something is wrong with webservice on ebay.

I'm waiting 10 day without solution .....  Am I realy the only person who want to change phone number on Ebay.de?