Wrong Permalink

Hi I have my web site for a few years and am trying to sort out a problem The permalink for the home page of my site is https://www.d1214068-7613.cp.blacknight.com/finedon.org.uk/home. Therfore this is the address in “all in one SEO” therfore when anyone searches for my web site this is the address that shows. THe correct domain for my web site is https://www.finedon.org.uk. is there any way I can change the permalink

Thank you in advance for ny help I get