Nokia windows phone problem on CT

Since my Nokia windows phone updated it's a real pain in the ...neck to use on club together, if I make a mistake typing I cannot use the back button to delete the letter but have to 1st hold the mistake untill it hilights then press back/delete after I have done that then the next letter must be pressed twice,or the cursor moves up the page & I cannot finish the post, this is the only site I have problems on, dou you think the ct software might be upgraded soon so all devices work or do I have to just get my zx spectrum out to be compatible with the software