Can I use my son's address in the UK on my e-visa application for Thailand if all my documents show his address?

Sorry tod, this is another question..I am in Thailand Udon and my one month extension runs out end may, arrived from UK March 3 and got 60 day exemption. I am going to Vientiane to apply for 90 day non o retirement visa. I have the 800k equivalent in UK savings accounts and understand I can use this. I don't have My own property in UK ,I live at my son's house. My bank statements,drivers license etc all show my son's address. Can I use this address on my e visas application ?

I was told by Udon Thani immigration that if I get the 90 day non o I can then open a thai bank account and then apply for a yearly extension if I have the 800k b for two months. Sorry some of these questions seem extremely basic but I seem to be getting different info from different sources and you seem on the ball.....I just want to get it right before I go to Vientiane. I also have a condo rented in Udon with myself and my thai girlfriend on the contract and Udon immigration used this for my extension. It's rented until October, would it be better to use this address on my application or my son's in Uk.

Thank you for your help