My wordpress has completely stopped working

well the problems started with my stupidly typing in another url alongside my original url in the url settings , which caused me to be unable to login and my page lost appearance setting and looked really simple. i could no longer log in to change this because my ur was different

https://www.marleybutler.co.uk
hosted by ukcheapest

i use ftp and tried using some of the fixes i found around here in which after doing these my whole page became blank and now all i get is blank white pages nomatter what i try and do

https://www.ads-software.com/support/topic/231721?replies=6
and a few pages with similar info. i changed all my settings in ftp to what they werre origibally and im still getting white pages

can anybody help?im pretty desperate because i really cant start this from scratch again

thankyou, im new to the forums so im sorry if i have broken any forum rules

thabkyou