FTP, Permissions error?

Heey, so I’ve been using InfinityFree, and I’m having a problem in the FTP.
I can upload files, but I cannot edit them? For example I can’t edit the default index that comes from InfinityFree, can’t edit the .htaccess, I can’t really edit nothing. And the error that is giving me is:
553 Can’t open that file: Permission denied

Oh okey nevermind, I can’t edit files, but I can delete them. :smiley: