"I haven't got access to that phone" page is nowhere to be found

PLEASE HELP I am feeling extremely frustrated as a Canadian living in Canada and trying to log into my gov.uk self assessment to confirm I have not lived in the country and have no financial ties since 2020. I no longer have the UK number that my access code is being sent to and I cannot log on. I also can't get a hold of a person to change it and when I click 'trouble accessing this code' it directs me to the online tech support contact. When I call online tech support (44 161 930 8445) the automated voice said to click on the 'I haven't got access to that phone' link. I have never seen this link anywhere. I have tried the online digital assistant, searched this forum, searched reddit, and made two overseas calls already. PLEASE HELP, is anyone out there?!

Hi,

If the link is available it should be on the page where you are being asked for the code.

If you are unable to see this you will need to try Online Services again:

Technical support with HMRC online services

Thank you.