Address not recognised & won't let me change


Please could someone assist me.

I am brand new to this and so finding it very confusing.

I added my home address but, the message was it didn’t recognise my address. I find this odd as the house was built in 1970! So, I put in my old address in Scotland to test, which it recognised but, now, it won’t let me remove the Scotland part…so it’s showing my address as Street, Manchester, Scotland!
how can I fix this please?