public async Task <IActionResult> Approve(int id)
        {
            DBAccess db   = new DBAccess();
            var      user = await _context.ApprovedUsers.FindAsync(id);

            db.ApproveFinalUser(id);

            _context.ApprovedUsers.Remove(user);
            await _context.SaveChangesAsync();

            return(RedirectToAction(nameof(Index)));
        }