Hello
I can help you with your project. I'd like to create python script that can do all work for you.
If you give me more information about website with authentification data I can make a sample rot you with real data.
I have an experience of extracting data from set of websites. For example: [login to view URL], [login to view URL], [login to view URL], [login to view URL], [login to view URL], [login to view URL], [login to view URL], [login to view URL], [login to view URL], [login to view URL], [login to view URL], [login to view URL], [login to view URL] and others. If you wish I can send you sample from any site you wish but I think you more interested a sample with data from your website.
Waiting for your answer.
UPDATE: I updated my bid to £50. I already sent sample for you. Now my scripts collecting data.