Free Software – Libre software and formats

I am a fitness coach and wish to conduct online lessons via a web chat which I can embed into a browser tab of my app ‘Perform Golf’. Essentially I want to create an web chat such as this: https://app.getonform.com/ It needs the following flow: 1. Customer purchases coaching session via landing page. 2. Customer redirected to their unique ‘coaching space’ 3. Customer can upload videos up to 100mb, chat and send photos. 4. I receive notifications that they have submitted a ‘lesson’ 5. I send back their golf swing analysis 6. I have the ability to close the chat so they cant communicate with me anymore but they can go back and review their videos apon completion from their unique coaching landing page. 7. In the unique coaching landing page there should be a button to request another lesson in which a ‘new lesson’ would open/ 8. At any stage the customer can review all previous lessons. This just needs to be a very simple interface. I am not sure if there is an app out there that does this already? Thanks very much.