Register for Self assessment difficulties

I need a tax identifier number so I can pay tax on property income. The only way I can get a Tax Identifier number is to register for the self-assessment. I cannot register for the self assessment as every time I try it send an email saying my address is inaccurate. My address is not inaccurate, and I am entering the same address on my personal tax account. I have tried calling however I cannot get through to an agent, so I do not know how I can register to pay the tax.

Hi,

If you are having issues with the online registration you can complete the fill in, print and post form here:

Register for Self Assessment

Thank you.