User accounts for saving form data?

I would do it like so:

  1. Allow them to register on your site.
  2. Save their forms as WordPress user meta (use update_user_meta).
  3. Modify your forms (so they prefill themselves with these saved informations). (use get_user_meta)

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)