[ShocK]

Is there anything else that needs to be saved in public_html folder? I was going to suggest clicking cleanup/reload account in cPanel and try installing again.
Only do this though if you don't mind that account being reset to "asnew" (will only affect that one domain name, not others if you have more)

[affweb]

I will try to do it, and so far I only have one domain so it's fine


Thank you
[Edit]
It worked yey!