Share 'Deleting tree from Ancestry'

I want to delete my current tree from Ancestry.co.uk and upload a new one from FTM 2010. I'm unable to delete the existing tree because the website shows my password as incorrect. My understanding is that I need to enter my Ancestry.co.uk password, which I am doing. I just logged in and out of my Ancestry account and the password is working fine there but still the delete tree function will not a…