To successfully change your address, please provide a document confirming the new address in a free-form order in your Personal Web Panel or Mobile App (section Requests). It could be:
Any utility bill provided by utility services (but not for mobile phone) with your address and name (not older than 3 months)
A Bank statement with your address for 1 full month (not older than 3 months)
A lease agreement (properly signed by both parties)
Tax declaration with your address, not older than 3 months (signed physically or electronically)
Any government or police penalty bill with your address and name on it (not older than 3 months)