Hello,
I am a native Polish speaker and I would like to help you with this project. Here are my answers to your questions:
1. 9
2. Polish
3. I believe that I am very good at researching various subjects on the internet. In addition to that, I have experience in corresponding via email with Polish-speaking clients.
4. I have not used the app before, but I'm sure that it will not be a problem for me.
5. Yes.
If you consider me suitable for this job, please don't hesitate to contact me to discuss further details.
Best regards,
Damian Jan